Eroare de compilare: main.cpp: In function 'void dfs(int, int, bool&)': main.cpp:27:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k == strlen(s + 1) && last[i] == true) ~~^~~~~~~~~~~~~~~~ main.cpp:29:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(k == strlen(s + 1)) return ; ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:44:10: error: no match for 'operator>>' (operand types are 'std::ofstream {aka std::basic_ofstream<char>}' and 'int') fout >> n >> m >> k >> fst; ~~~~~^~~~ main.cpp:44:10: note: candidate: operator>>(int, int) <built-in> main.cpp:44:10: note: no known conversion for argument 1 from 'std::ofstream {aka std::basic_ofstream<char>}' to 'int' In file included from /usr/include/c++/6/string:53:0, from /usr/include/c++/6/bits/locale_classes.h:40, from /usr/include/c++/6/bits/ios_base.h:41, from /usr/include/c++/6/ios:42, from /usr/include/c++/6/istream:38, from /usr/include/c++/6/sstream:38, from /usr/include/c++/6/complex:45, from /usr/include/c++/6/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:52, from main.cpp:1: /usr/include/c++/6/bits/basic_string.tcc:1437:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&) operator>>(basic_istream<_CharT, _Traits>& __in, ^~~~~~~~ /usr/include/c++/6/bits/basic_string.tcc:1437:5: note: template argument deduction/substitution failed: main.cpp:44:13: note: 'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>' fout >> n >> m >> k >> fst; ^ In file included from /usr/include/c++/6/istream:934:0, from /usr/include/c++/6/sstream:38, from /usr/include/c++/6/complex:45, from /usr/include/c++/6/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:52, from main.cpp:1: /usr/include/c++/6/bits/istream.tcc:963:5: note: candidate: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*) operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s) ^~~~~~~~ /usr/include/c++/6/bits/istream.tcc:963:5: note: template argument deduction/substitution failed: main.cpp:44:13: note: 'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>' fout >> n >> m >> k >> fst; ^ In file included from /usr/include/c++/6/istream:934:0, from /usr/include/c++/6/sstream:38, from /usr/include/c++/6/complex:45, from /usr/include/c++/6/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:52, from main.cpp:1: /usr/include/c++/6/bits/istream.tcc:931:5: note: candidate: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&) Non zero exit status: 1