Compilare: main.cpp: In function 'void dijkstra()': main.cpp:26:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for(int i=0;i<l[a].size();i++){ | ~^~~~~~~~~~~~ main.cpp:23:30: warning: unused variable 'dist' [-Wunused-variable] 23 | int a=q.top().second,dist=-q.top().first; | ^~~~