Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:23:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(i=0;i<adj[curr].size();i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:81:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for(i=0;i<mi.size();i++) | ~^~~~~~~~~~ main.cpp:87:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 87 | for(i=0;i<verigii.size();i++) | ~^~~~~~~~~~~~~~~ main.cpp:54:13: warning: unused variable 'j' [-Wunused-variable] 54 | int n,i,j,k,m,a,b; | ^ main.cpp:54:15: warning: unused variable 'k' [-Wunused-variable] 54 | int n,i,j,k,m,a,b; | ^ main.cpp:62:9: warning: unused variable 'nr' [-Wunused-variable] 62 | int nr=0; | ^~