Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:38:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for(i=0; i<adj[curr].size(); i++) | ~^~~~~~~~~~~~~~~~~ main.cpp:47:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(i=0; i<adj[curr].size(); i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:69:15: warning: unused variable 'k' [-Wunused-variable] 69 | int n,i,j,k,l,a,b,t,op; | ^ main.cpp:69:17: warning: unused variable 'l' [-Wunused-variable] 69 | int n,i,j,k,l,a,b,t,op; | ^