Compilare: main.cpp: In function 'bool check(int, int, int, int, int, std::vector<int>&)': main.cpp:28:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(ans+1 < t.size() && pd[x][t[ans+1]+1] <= mx) ~~~~~~^~~~~~~~~~ main.cpp:43:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < p.size(); ++i) ~~^~~~~~~~~~