Compilare: main.cpp: In function 'void query(int, int, int, int)': main.cpp:52:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | while (j < aint[nod][1].size() && aint[nod][1][j].first < p[i].first) { | ~~^~~~~~~~~~~~~~~~~~~~~ In file included from /usr/include/c++/10/cassert:44, from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33, from main.cpp:1: main.cpp:55:23: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses] 55 | assert (p[k].first < p[i].first < p[k].second < p[i].second); | ~~~~~~~~~~~^~~~~~~~~~~~ main.cpp:55:36: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses] 55 | assert (p[k].first < p[i].first < p[k].second < p[i].second); | ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:63:23: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses] 63 | assert (p[i].first < p[k].first < p[i].second < p[k].second); | ~~~~~~~~~~~^~~~~~~~~~~~ main.cpp:63:36: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses] 63 | assert (p[i].first < p[k].first < p[i].second < p[k].second); | ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~