Compilare: main.cpp: In member function 'void Graph::dfs(int, int)': main.cpp:50:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for(int i = 0; i < adcost[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void solveMaximumFlow()': main.cpp:65:9: warning: unused variable 'matrix_flow' [-Wunused-variable] 65 | int matrix_flow[N][N]; ///the flow on an edge | ^~~~~~~~~~~ main.cpp:95:13: warning: 'sol' may be used uninitialized in this function [-Wmaybe-uninitialized] 95 | fout << sol; | ^~~