Compilare: main.cpp: In function 'int main()': main.cpp:37:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(i=0;i<G[curent].size();i++) | ~^~~~~~~~~~~~~~~~~ main.cpp:21:18: warning: unused variable 'nod_start' [-Wunused-variable] 21 | {int n,m,x,y,i,c,nod_start,curent,vecin,cost; | ^~~~~~~~~