Compilare: main.cpp: In function 'void DFS(int, int)': main.cpp:20:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(int i = 0; i < G[nod].size(); ++ i){ | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int query(int, int)': main.cpp:33:46: warning: integer overflow in expression of type 'int' results in '2147483647' [-Woverflow] 33 | pair<int, int> ans = make_pair((1 << 31) - 1, (1 << 31) - 1); | ~~~~~~~~~~^~~ main.cpp:33:61: warning: integer overflow in expression of type 'int' results in '2147483647' [-Woverflow] 33 | pair<int, int> ans = make_pair((1 << 31) - 1, (1 << 31) - 1); | ~~~~~~~~~~^~~