Compilare: main.cpp: In function 'void dfs(int)': main.cpp:37:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(int i=0;i<v[x].size();i++){ | ~^~~~~~~~~~~~ main.cpp: In function 'void scc(int)': main.cpp:46:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for(int i=0;i<r[x].size();i++){ | ~^~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:56:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for(int i=0;i<g[x].size();i++){ | ~^~~~~~~~~~~~ main.cpp: In function 'int ford_fulkerson(int, int)': main.cpp:95:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 95 | for(int i=0;i<s[x].size();i++){ | ~^~~~~~~~~~~~