Compilare: main.cpp: In constructor 'graph::graph(int, int, std::vector<std::vector<int> >&)': main.cpp:36:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for( int j = 0; j < ad[i].size(); ++i) | ~~^~~~~~~~~~~~~~ main.cpp: In member function 'void graph::DFS(int, bool*)': main.cpp:56:23: 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 < Ad[nod].size(); ++i ){ | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'void graph::BFS(int)': main.cpp:73:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | for( int i = 0; i < Ad[x].size(); ++i ){ | ~~^~~~~~~~~~~~~~ main.cpp: In member function 'void graph::Kruskal()': main.cpp:157:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 157 | for( int i = 0; i < Sol.size(); ++i ) | ~~^~~~~~~~~~~~