Compilare: main.cpp: In function 'void DFS(int, int)': main.cpp:27:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for(int x=0;x<v[nod].size();++x) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void DFS2(int, int)': main.cpp:47:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int x=0;x<v[tata].size();++x) | ~^~~~~~~~~~~~~~~ main.cpp:53:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for(int x=0;x<v[nod].size();++x) | ~^~~~~~~~~~~~~~ main.cpp:66:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | for(int x=0;x<v[nod].size();++x) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void DFS3(int, int)': main.cpp:82:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 82 | for(int x=0;x<v[nod].size();++x) | ~^~~~~~~~~~~~~~