Compilare: main.cpp: In function 'void dijkstra(int, int)': main.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for (i = 0; i < v[x].size(); i++) | ~~^~~~~~~~~~~~~ main.cpp: In function 'int drumcalc(int, int, int)': main.cpp:39:9: warning: 'd' may be used uninitialized in this function [-Wmaybe-uninitialized] 39 | int d, mn = 2e7; | ^