Compilare: main.cpp: In function 'void dijkstra(std::vector<int>&, int&)': main.cpp:30:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | for(int i=0;i<sources.size();++i){ | ~^~~~~~~~~~~~~~~ main.cpp:39:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int i=0;i<graph[crt.nod].size();++i){ | ~^~~~~~~~~~~~~~~~~~~~~~