Detalii evaluare: ~54117868

Detalii evaluare #54117868

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Rezumat problemă

`#3624` bal1

Tocmai a ajuns la balul din sat un grup de n fete numerotate de la 1 la n. Acolo sunt așteptate de m băieți frumoși, numerotați de la 1 la m. Fiecare băiat i (i=1..m) are un coeficient de frumusețe b[i]. Fetele nu acceptă orice băiat la dans. Fata i va accepta să danseze cu un băiat doar dacă băiatul are un coeficient de frumusețe mai mare sau egal cu f[i]. Cunoscând coeficienții de frumusețe ai băieților, b[1], b[2], …, b[m] precum și coeficienții preferințelor fetelor, f[1], f[2], …, f[n], să se determine numărul maxim de perechi de dansatori care se poate forma.
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Pracsiu Dan (dnprx)
Dan Pracsiu
medie
Clasa 11 Metoda Greedy Probleme diverse cu metoda Greedy
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Detalii

Problema	bal1	Operații I/O	`bal.in`/`bal.out`
Limita timp	0.3 secunde	Limita memorie	Total: `64 MB` / Stivă `8 MB`
Id soluție	`#54117868`	Utilizator	Ciobanica Alexandru (AlexCiobi)
Fișier	bal1.cpp	Dimensiune	580 B
Data încărcării	20 Noiembrie 2024, 09:37	Scor / rezultat	Eroare de compilare
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Mesaj compilare

bal1.cpp:8:23: error: conflicting declaration 'int f [100001]'
 int b[100001],f[100001],n,m,p,c1,c2;

                       ^
bal1.cpp:5:10: error: 'f' has a previous declaration as 'std::ifstream f'
 ifstream f("bal.in");

          ^
bal1.cpp: In function 'int main()':
bal1.cpp:15:13: error: no match for 'operator[]' (operand types are 'std::ifstream {aka std::basic_ifstream<char>}' and 'int')
         f>>f[i];

             ^
bal1.cpp:21:11: error: no match for 'operator+' (operand types are 'std::ifstream {aka std::basic_ifstream<char>}' and 'int')
     sort(f+1,f+n+1);

           ^
bal1.cpp:21:11: note: candidates are:
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:333:5: note: template<class _Iterator> std::reverse_iterator<_Iterator> std::operator+(typename std::reverse_iterator<_Iterator>::difference_type, const std::reverse_iterator<_Iterator>&)
     operator+(typename reverse_iterator<_Iterator>::difference_type __n,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:333:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:1118:5: note: template<class _Iterator> std::move_iterator<_Iterator> std::operator+(typename std::move_iterator<_Iterator>::difference_type, const std::move_iterator<_Iterator>&)
     operator+(typename move_iterator<_Iterator>::difference_type __n,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:1118:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   mismatched types 'const std::move_iterator<_Iterator>' and 'int'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2365:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(const std::basic_string<_CharT, _Traits, _Alloc>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2365:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/string:53:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.tcc:692:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(const _CharT*, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator+(const _CharT* __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.tcc:692:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   mismatched types 'const _CharT*' and 'std::basic_ifstream<char>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/string:53:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.tcc:708:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(_CharT, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator+(_CharT __lhs, const basic_string<_CharT, _Traits, _Alloc>& __rhs)
     ^
/usr/include/c++/4.8/bits/basic_string.tcc:708:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   mismatched types 'const std::basic_string<_CharT, _Traits, _Alloc>' and 'int'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2402:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(const std::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)
     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2402:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2418:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(const std::basic_string<_CharT, _Traits, _Alloc>&, _CharT)
     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs)
     ^
/usr/include/c++/4.8/bits/basic_string.h:2418:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2430:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(std::basic_string<_CharT, _Traits, _Alloc>&&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2430:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2436:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(const std::basic_string<_CharT, _Traits, _Alloc>&, std::basic_string<_CharT, _Traits, _Alloc>&&)
     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2436:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2442:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(std::basic_string<_CharT, _Traits, _Alloc>&&, std::basic_string<_CharT, _Traits, _Alloc>&&)
     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2442:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2454:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(const _CharT*, std::basic_string<_CharT, _Traits, _Alloc>&&)
     operator+(const _CharT* __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2454:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   mismatched types 'const _CharT*' and 'std::basic_ifstream<char>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2460:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(_CharT, std::basic_string<_CharT, _Traits, _Alloc>&&)
     operator+(_CharT __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2460:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   mismatched types 'std::basic_string<_CharT, _Traits, _Alloc>' and 'int'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2466:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(std::basic_string<_CharT, _Traits, _Alloc>&&, const _CharT*)
     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2466:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2472:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(std::basic_string<_CharT, _Traits, _Alloc>&&, _CharT)
     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2472:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/ccomplex:38:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/complex:324:5: note: template<class _Tp> std::complex<_Tp> std::operator+(const std::complex<_Tp>&, const std::complex<_Tp>&)
     operator+(const complex<_Tp>& __x, const complex<_Tp>& __y)
     ^
/usr/include/c++/4.8/complex:324:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::complex<_Tp>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/ccomplex:38:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/complex:333:5: note: template<class _Tp> std::complex<_Tp> std::operator+(const std::complex<_Tp>&, const _Tp&)
     operator+(const complex<_Tp>& __x, const _Tp& __y)
     ^
/usr/include/c++/4.8/complex:333:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::complex<_Tp>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/ccomplex:38:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/complex:342:5: note: template<class _Tp> std::complex<_Tp> std::operator+(const _Tp&, const std::complex<_Tp>&)
     operator+(const _Tp& __x, const complex<_Tp>& __y)
     ^
/usr/include/c++/4.8/complex:342:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   mismatched types 'const std::complex<_Tp>' and 'int'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/ccomplex:38:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/complex:443:5: note: template<class _Tp> std::complex<_Tp> std::operator+(const std::complex<_Tp>&)
     operator+(const complex<_Tp>& __x)
     ^
/usr/include/c++/4.8/complex:443:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::complex<_Tp>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/vector:65:0,
                 from /usr/include/c++/4.8/bits/random.h:34,
                 from /usr/include/c++/4.8/random:50,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/stl_bvector.h:293:3: note: std::_Bit_iterator std::operator+(std::ptrdiff_t, const std::_Bit_iterator&)
   operator+(ptrdiff_t __n, const _Bit_iterator& __x)
   ^
/usr/include/c++/4.8/bits/stl_bvector.h:293:3: note:   no known conversion for argument 2 from 'int' to 'const std::_Bit_iterator&'
/usr/include/c++/4.8/bits/stl_bvector.h:379:3: note: std::_Bit_const_iterator std::operator+(std::ptrdiff_t, const std::_Bit_const_iterator&)
   operator+(ptrdiff_t __n, const _Bit_const_iterator& __x)
   ^
/usr/include/c++/4.8/bits/stl_bvector.h:379:3: note:   no known conversion for argument 2 from 'int' to 'const std::_Bit_const_iterator&'
In file included from /usr/include/c++/4.8/deque:64:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:67,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/stl_deque.h:354:5: note: template<class _Tp, class _Ref, class _Ptr> std::_Deque_iterator<_Tp, _Ref, _Ptr> std::operator+(std::ptrdiff_t, const std::_Deque_iterator<_Tp, _Ref, _Ptr>&)
     operator+(ptrdiff_t __n, const _Deque_iterator<_Tp, _Ref, _Ptr>& __x)
     ^
/usr/include/c++/4.8/bits/stl_deque.h:354:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   cannot convert 'f' (type 'std::ifstream {aka std::basic_ifstream<char>}') to type 'std::ptrdiff_t {aka int}'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note: template<class _Dom1, class _Dom2> std::_Expr<std::_BinClos<std::__plus, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::_Expr<_Dom2, typename _Dom2::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__plus, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)
     _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__plus, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const typename _Dom::value_type&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__plus, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::valarray<typename _Dom::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__plus, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const std::valarray<typename _Dom::value_type>&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::valarray<typename _Dom::value_type>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from bal1.cpp:1:
/usr/include/c++/4.8/valarray:1167:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__plus, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__plus, _Tp>::result_type> std::operator+(const std::valarray<_Tp>&, const std::valarray<_Tp>&)
 _DEFINE_BINARY_OPERATOR(+, __plus)
 ^
/usr/include/c++/4.8/valarray:1167:1: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::valarray<_Tp>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from bal1.cpp:1:
/usr/include/c++/4.8/valarray:1167:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__plus, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__plus, _Tp>::result_type> std::operator+(const std::valarray<_Tp>&, const _Tp&)
 _DEFINE_BINARY_OPERATOR(+, __plus)
 ^
/usr/include/c++/4.8/valarray:1167:1: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::valarray<_Tp>'
     sort(f+1,f+n+1);

            ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from bal1.cpp:1:
/usr/include/c++/4.8/valarray:1167:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__plus, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__plus, _Tp>::result_type> std::operator+(const _Tp&, const std::valarray<_Tp>&)
 _DEFINE_BINARY_OPERATOR(+, __plus)
 ^
/usr/include/c++/4.8/valarray:1167:1: note:   template argument deduction/substitution failed:
bal1.cpp:21:12: note:   mismatched types 'const std::valarray<_Tp>' and 'int'
     sort(f+1,f+n+1);

            ^
bal1.cpp:21:15: error: no match for 'operator+' (operand types are 'std::ifstream {aka std::basic_ifstream<char>}' and 'int')
     sort(f+1,f+n+1);

               ^
bal1.cpp:21:15: note: candidates are:
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:333:5: note: template<class _Iterator> std::reverse_iterator<_Iterator> std::operator+(typename std::reverse_iterator<_Iterator>::difference_type, const std::reverse_iterator<_Iterator>&)
     operator+(typename reverse_iterator<_Iterator>::difference_type __n,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:333:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:1118:5: note: template<class _Iterator> std::move_iterator<_Iterator> std::operator+(typename std::move_iterator<_Iterator>::difference_type, const std::move_iterator<_Iterator>&)
     operator+(typename move_iterator<_Iterator>::difference_type __n,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:1118:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   mismatched types 'const std::move_iterator<_Iterator>' and 'int'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2365:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(const std::basic_string<_CharT, _Traits, _Alloc>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2365:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/string:53:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.tcc:692:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(const _CharT*, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator+(const _CharT* __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.tcc:692:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   mismatched types 'const _CharT*' and 'std::basic_ifstream<char>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/string:53:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.tcc:708:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(_CharT, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator+(_CharT __lhs, const basic_string<_CharT, _Traits, _Alloc>& __rhs)
     ^
/usr/include/c++/4.8/bits/basic_string.tcc:708:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   mismatched types 'const std::basic_string<_CharT, _Traits, _Alloc>' and 'int'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2402:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(const std::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)
     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2402:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2418:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(const std::basic_string<_CharT, _Traits, _Alloc>&, _CharT)
     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs)
     ^
/usr/include/c++/4.8/bits/basic_string.h:2418:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2430:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(std::basic_string<_CharT, _Traits, _Alloc>&&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2430:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2436:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(const std::basic_string<_CharT, _Traits, _Alloc>&, std::basic_string<_CharT, _Traits, _Alloc>&&)
     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2436:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2442:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(std::basic_string<_CharT, _Traits, _Alloc>&&, std::basic_string<_CharT, _Traits, _Alloc>&&)
     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2442:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2454:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(const _CharT*, std::basic_string<_CharT, _Traits, _Alloc>&&)
     operator+(const _CharT* __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2454:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   mismatched types 'const _CharT*' and 'std::basic_ifstream<char>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2460:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(_CharT, std::basic_string<_CharT, _Traits, _Alloc>&&)
     operator+(_CharT __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2460:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   mismatched types 'std::basic_string<_CharT, _Traits, _Alloc>' and 'int'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2466:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(std::basic_string<_CharT, _Traits, _Alloc>&&, const _CharT*)
     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2466:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2472:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(std::basic_string<_CharT, _Traits, _Alloc>&&, _CharT)
     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2472:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_string<_CharT, _Traits, _Alloc>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/ccomplex:38:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/complex:324:5: note: template<class _Tp> std::complex<_Tp> std::operator+(const std::complex<_Tp>&, const std::complex<_Tp>&)
     operator+(const complex<_Tp>& __x, const complex<_Tp>& __y)
     ^
/usr/include/c++/4.8/complex:324:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::complex<_Tp>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/ccomplex:38:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/complex:333:5: note: template<class _Tp> std::complex<_Tp> std::operator+(const std::complex<_Tp>&, const _Tp&)
     operator+(const complex<_Tp>& __x, const _Tp& __y)
     ^
/usr/include/c++/4.8/complex:333:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::complex<_Tp>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/ccomplex:38:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/complex:342:5: note: template<class _Tp> std::complex<_Tp> std::operator+(const _Tp&, const std::complex<_Tp>&)
     operator+(const _Tp& __x, const complex<_Tp>& __y)
     ^
/usr/include/c++/4.8/complex:342:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   mismatched types 'const std::complex<_Tp>' and 'int'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/ccomplex:38:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from bal1.cpp:1:
/usr/include/c++/4.8/complex:443:5: note: template<class _Tp> std::complex<_Tp> std::operator+(const std::complex<_Tp>&)
     operator+(const complex<_Tp>& __x)
     ^
/usr/include/c++/4.8/complex:443:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::complex<_Tp>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/vector:65:0,
                 from /usr/include/c++/4.8/bits/random.h:34,
                 from /usr/include/c++/4.8/random:50,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/stl_bvector.h:293:3: note: std::_Bit_iterator std::operator+(std::ptrdiff_t, const std::_Bit_iterator&)
   operator+(ptrdiff_t __n, const _Bit_iterator& __x)
   ^
/usr/include/c++/4.8/bits/stl_bvector.h:293:3: note:   no known conversion for argument 2 from 'int' to 'const std::_Bit_iterator&'
/usr/include/c++/4.8/bits/stl_bvector.h:379:3: note: std::_Bit_const_iterator std::operator+(std::ptrdiff_t, const std::_Bit_const_iterator&)
   operator+(ptrdiff_t __n, const _Bit_const_iterator& __x)
   ^
/usr/include/c++/4.8/bits/stl_bvector.h:379:3: note:   no known conversion for argument 2 from 'int' to 'const std::_Bit_const_iterator&'
In file included from /usr/include/c++/4.8/deque:64:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:67,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/stl_deque.h:354:5: note: template<class _Tp, class _Ref, class _Ptr> std::_Deque_iterator<_Tp, _Ref, _Ptr> std::operator+(std::ptrdiff_t, const std::_Deque_iterator<_Tp, _Ref, _Ptr>&)
     operator+(ptrdiff_t __n, const _Deque_iterator<_Tp, _Ref, _Ptr>& __x)
     ^
/usr/include/c++/4.8/bits/stl_deque.h:354:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   cannot convert 'f' (type 'std::ifstream {aka std::basic_ifstream<char>}') to type 'std::ptrdiff_t {aka int}'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note: template<class _Dom1, class _Dom2> std::_Expr<std::_BinClos<std::__plus, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::_Expr<_Dom2, typename _Dom2::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__plus, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)
     _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__plus, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const typename _Dom::value_type&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__plus, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::valarray<typename _Dom::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from bal1.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__plus, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const std::valarray<typename _Dom::value_type>&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:402:5: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::valarray<typename _Dom::value_type>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from bal1.cpp:1:
/usr/include/c++/4.8/valarray:1167:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__plus, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__plus, _Tp>::result_type> std::operator+(const std::valarray<_Tp>&, const std::valarray<_Tp>&)
 _DEFINE_BINARY_OPERATOR(+, __plus)
 ^
/usr/include/c++/4.8/valarray:1167:1: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::valarray<_Tp>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from bal1.cpp:1:
/usr/include/c++/4.8/valarray:1167:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__plus, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__plus, _Tp>::result_type> std::operator+(const std::valarray<_Tp>&, const _Tp&)
 _DEFINE_BINARY_OPERATOR(+, __plus)
 ^
/usr/include/c++/4.8/valarray:1167:1: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::valarray<_Tp>'
     sort(f+1,f+n+1);

                ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from bal1.cpp:1:
/usr/include/c++/4.8/valarray:1167:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__plus, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__plus, _Tp>::result_type> std::operator+(const _Tp&, const std::valarray<_Tp>&)
 _DEFINE_BINARY_OPERATOR(+, __plus)
 ^
/usr/include/c++/4.8/valarray:1167:1: note:   template argument deduction/substitution failed:
bal1.cpp:21:16: note:   mismatched types 'const std::valarray<_Tp>' and 'int'
     sort(f+1,f+n+1);

                ^
bal1.cpp:27:14: error: no match for 'operator[]' (operand types are 'std::ifstream {aka std::basic_ifstream<char>}' and 'int')
         if (f[c1]<=b[c2])

              ^
Cum funcționează evaluarea?

www.pbinfo.ro permite evaluarea a două tipuri de probleme:
probleme la care rezolvarea presupune scrierea unui program complet
probleme la care rezolvarea presupune scrierea unei secvențe de program - câteva instrucțiuni, o listă de declarații, una sau mai multe funcții, etc.
Problema bal1 face parte din prima categorie. Soluția propusă de tine va fi evaluată astfel:
Programul sursă este compilat folosind compilatorul corespunzător. Dacă în urma compilării se obțin erori sau avertismente, acestea sunt afișate în această pagină.
Dacă programul a fost compilat, executabilul obținut va fi rulat, furnizându-i-se unul sau mai multe seturi de date de intrare, în concordanță cu restricțiile specifice problemei. Pentru fiecare set de date se obține un anumit punctaj, în raport cu corectitudinea soluției tale.
Suma punctajelor acordate pe testele utilizate pentru verificare este 100. Astfel, soluția ta poate obține cel mult 100 de puncte, caz în care se poate considera corectă.