Compilare: main.cpp: In function 'int main()': main.cpp:48:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for(i=0;i<adj[curr].size();i++) | ~^~~~~~~~~~~~~~~~~ main.cpp:15:19: warning: unused variable 'j' [-Wunused-variable] 15 | long long n,i,j,k,l,m,a,b,w,cost,x,curr; | ^ main.cpp:15:23: warning: unused variable 'l' [-Wunused-variable] 15 | long long n,i,j,k,l,m,a,b,w,cost,x,curr; | ^