Compilare: main.cpp: In function 'void dfs(long long int)': main.cpp:17:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for(i=0; i<adj[curr].size(); i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void sume(long long int)': main.cpp:28:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for(i=0; i<adj[curr].size(); i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:38:19: warning: unused variable 'j' [-Wunused-variable] 38 | long long n,i,j,k,a,w; | ^ main.cpp:38:21: warning: unused variable 'k' [-Wunused-variable] 38 | long long n,i,j,k,a,w; | ^