Compilare: main.cpp: In function 'void dfs(int)': main.cpp:16:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for(int i=0;i<v[p].size();i++) | ~^~~~~~~~~~~~ main.cpp: In function 'void dijkstra(int)': main.cpp:6:13: warning: overflow in conversion from 'double' to 'int' changes value from '4.0e+9' to '2147483647' [-Woverflow] 6 | #define inf 4e9 | ^~~ main.cpp:24:14: note: in expansion of macro 'inf' 24 | d[i]=inf; | ^~~ main.cpp:33:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(i=0;i<v[t].size();i++) | ~^~~~~~~~~~~~