Compilare: main.cpp: In instantiation of 'main()::<lambda(int, int, ll, ll, auto:1)> [with auto:1 = main()::<lambda(int, int, ll, ll, auto:1)>; ll = long long int]': main.cpp:69:27: required from here main.cpp:51:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int>, std::allocator<std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for(int i = 0; i < g[id].size(); i++){ | ~~^~~~~~~~~~~~~~