Compilare: main.cpp: In member function 'void graph::Dfs(int)': main.cpp:26:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | 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:37:27: 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 < ad[node].size(); ++i ) { | ~~^~~~~~~~~~~~~~~~~ main.cpp: In member function 'void graph::Dfs3(int)': main.cpp:69:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | for( int i = 0; i < ad[node].size(); ++i ) { | ~~^~~~~~~~~~~~~~~~~ main.cpp: In member function 'void graph::Dfs4(int, std::vector<int>&)': main.cpp:82:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 82 | for( int i = 0; i < reverseAd[node].size(); ++i ) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void graph::bfsTraversal(int)': main.cpp:161:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 161 | for( int i = 0; i < ad[u].size(); ++i ) { | ~~^~~~~~~~~~~~~~ main.cpp: In static member function 'static bool graph::HavelHakimiUtillity(std::vector<int>)': main.cpp:229:31: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 229 | if( degree.back() > degree.size() - 1 ) | ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~