Compilare: main.cpp: In member function 'int numere::DFS_sendflow(int, int)': main.cpp:168:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(; ind[node]<gr[node].size(); ind[node]++) main.cpp: In member function 'void numere::AddEdge(int, int, int)': main.cpp:219:44: warning: narrowing conversion of '(&((numere*)this)->numere::gr.std::vector<_Tp, _Alloc>::operator[]<std::vector<numere::Edge>, std::allocator<std::vector<numere::Edge> > >(((std::vector<std::vector<numere::Edge> >::size_type)y)))->std::vector<_Tp, _Alloc>::size<numere::Edge, std::allocator<numere::Edge> >()' from 'std::vector<numere::Edge>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] gr[x].push_back({y,0,cap,gr[y].size()}); ~~~~~~~~~~^~ main.cpp:221:44: warning: narrowing conversion of '((&((numere*)this)->numere::gr.std::vector<_Tp, _Alloc>::operator[]<std::vector<numere::Edge>, std::allocator<std::vector<numere::Edge> > >(((std::vector<std::vector<numere::Edge> >::size_type)x)))->std::vector<_Tp, _Alloc>::size<numere::Edge, std::allocator<numere::Edge> >() - 1ul)' from 'std::vector<numere::Edge>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] gr[y].push_back({x,0,0,gr[x].size()-1}); ~~~~~~~~~~~~^~ main.cpp: In function 'int main()': main.cpp:263:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&m); ^ main.cpp:272:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&x,&y,&z); ^