Compilare: main.cpp: In function 'void dijkstra(int)': main.cpp:36:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for(i=0; i<g[k].size(); i++) | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:52:9: warning: unused variable 'j' [-Wunused-variable] 52 | {int i, j; | ^