Compilare: main.cpp: In function 'int main()': main.cpp:141:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 141 | for(j=0; j<adj[curr].size(); j++) | ~^~~~~~~~~~~~~~~~~ main.cpp:27:17: warning: unused variable 'l' [-Wunused-variable] 27 | int n,i,j,k,l,last=1,poz1,poz2,x,y,xcurr,ycurr,nodcurr=2,poz,iter,val,curr; | ^