Compilare: main.cpp: In member function 'long long int Dinic::dfs(int, long long int)': main.cpp:68:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for (int i = 0; i < g[u].size(); i++) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:122:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 122 | for (int j = 0; j < a[i].size(); j++) | ~~^~~~~~~~~~~~~