Compilare: main.cpp: In member function 'void graph::Dfs(int)': main.cpp:23:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for( int i = 0; i < ad[node].size(); ++i ) { | ~~^~~~~~~~~~~~~~~~~ main.cpp: In member function 'void graph::Dfs2(int, int, std::vector<std::vector<int> >&)': main.cpp:34:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for( int i = 0; i < ad[node].size(); ++i ) { | ~~^~~~~~~~~~~~~~~~~ main.cpp: In member function 'void graph::Dfs3(int)': main.cpp:63:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 63 | for( int i = 0; i < ad[node].size(); ++i ) { | ~~^~~~~~~~~~~~~~~~~ main.cpp: In member function 'void graph::Dfs4(int, std::vector<int>&)': main.cpp:76:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 76 | for( int i = 0; i < reverseAd[node].size(); ++i ) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void graph::BfsTraversal(int)': main.cpp:141:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 141 | for( int i = 0; i < ad[u].size(); ++i ) { | ~~^~~~~~~~~~~~~~