Compilare: main.cpp: In function 'void dfs(int)': main.cpp:41:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for(int i=0;i<v[x].size();i++){ | ~^~~~~~~~~~~~ main.cpp: In function 'void scc(int)': main.cpp:50:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for(int i=0;i<r[x].size();i++){ | ~^~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:60:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for(int i=0;i<g[x].size();i++){ | ~^~~~~~~~~~~~ main.cpp: In function 'void bfs(int)': main.cpp:96:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for(int i=0;i<s[x].size();i++){ | ~^~~~~~~~~~~~ main.cpp: In function 'int dinic(int, int)': main.cpp:120:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 120 | for(int i=ind[x];i<s[x].size();i++){ | ~^~~~~~~~~~~~