Compilare: main.cpp: In function 'void dfs2(int, int, int)': main.cpp:31:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for(int j=0;j<A[nod].size();j++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs1(int, int, int, int)': main.cpp:72:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(int j=0;j<A[nod].size();j++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs(int, int)': main.cpp:84:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 84 | for(int j=0;j<A[x].size();j++) | ~^~~~~~~~~~~~