Compilare: user.cpp: In function ‘void addedge(int, int)’: user.cpp:31:28: warning: narrowing conversion of ‘g[to].std::vector<_Tp, _Alloc>::size<Edge, std::allocator<Edge> >()’ from ‘std::vector<Edge>::size_type {aka unsigned int}’ to ‘int’ inside { } [-Wnarrowing] Edge a = {to, g[to].size(), 0, cap[from][to]}; ^ user.cpp:32:32: warning: narrowing conversion of ‘g[from].std::vector<_Tp, _Alloc>::size<Edge, std::allocator<Edge> >()’ from ‘std::vector<Edge>::size_type {aka unsigned int}’ to ‘int’ inside { } [-Wnarrowing] Edge b = {from, g[from].size(), 0, cap[to][from]}; ^ user.cpp: In function ‘bool dinicbfs()’: user.cpp:43:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < g[from].size(); j++) { ^ user.cpp: In function ‘int dinicdfs(int, int)’: user.cpp:59:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int &i = rem[from]; i < g[from].size(); i++) { ^