Eroare de compilare: user.cpp: In function ‘void dfs(int, int, int)’: user.cpp:93:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); ++i) ~~^~~~~~~~~~~~~~~ user.cpp: In function ‘void Euler(int, int)’: user.cpp:106:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); ++i) ~~^~~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:173:7: error: no match for ‘operator>>’ (operand types are ‘InParser’ and ‘std::__cxx11::string {aka std::__cxx11::basic_string<char>}’) f >> s; ~~^~~~ user.cpp:29:15: note: candidate: InParser& InParser::operator>>(int&) InParser& operator >> (int &n) { ^~~~~~~~ user.cpp:29:15: note: no known conversion for argument 1 from ‘std::__cxx11::string {aka std::__cxx11::basic_string<char>}’ to ‘int&’ user.cpp:46:15: note: candidate: InParser& InParser::operator>>(long long int&) InParser& operator >> (long long &n) { ^~~~~~~~ user.cpp:46:15: note: no known conversion for argument 1 from ‘std::__cxx11::string {aka std::__cxx11::basic_string<char>}’ to ‘long long 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++/6/32/bits/stdc++.h:52, from user.cpp:3: /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: user.cpp:173:10: note: ‘InParser’ is not derived from ‘std::basic_istream<_CharT, _Traits>’ f >> s; ^ 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++/6/32/bits/stdc++.h:52, from user.cpp:3: /usr/include/c++/6/bits/istream.tcc:955:5: 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:955:5: note: template argument deduction/substitution failed: user.cpp:173:10: note: ‘InParser’ is not derived from ‘std::basic_istream<_CharT, _Traits>’ f >> s; ^