Compilare: user.cpp: In function ‘bool bfs()’: user.cpp:35:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[from].size(); i ++) { ~~^~~~~~~~~~~~~~~~ user.cpp: In function ‘int dfs(int, int)’: user.cpp:51:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int &i = rem[from]; i < g[from].size(); i ++) { ~~^~~~~~~~~~~~~~~~ user.cpp: In function ‘void computemark(int, int)’: user.cpp:93:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[from].size(); i ++) { ~~^~~~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:112:43: warning: narrowing conversion of ‘g[y].std::vector<_Tp, _Alloc>::size<Edge, std::allocator<Edge> >()’ from ‘std::vector<Edge>::size_type {aka unsigned int}’ to ‘int’ inside { } [-Wnarrowing] g[x].push_back({y, z, 0, g[y].size()}); ~~~~~~~~~^~ user.cpp:113:46: warning: narrowing conversion of ‘(g[x].std::vector<_Tp, _Alloc>::size<Edge, std::allocator<Edge> >() - 1u)’ from ‘std::vector<Edge>::size_type {aka unsigned int}’ to ‘int’ inside { } [-Wnarrowing] g[y].push_back({x, z, 0, g[x].size() - 1}); ~~~~~~~~~~~~^~~ user.cpp:118:9: warning: unused variable ‘maxflow’ [-Wunused-variable] int maxflow = dinic(); ^~~~~~~