#include <bits/stdc++.h>
using namespace std;
int N, Q;
vector <pair <int, int>> V[100000];
void buildWall(int n, int q, int t[], int l[], int r[], int x[], int O[])
{
N = n;
Q = q;
for(int i = 0; i < N; i++) O[i] = 0;
for(int i = 0; i < Q; i++) if(t[i] == 1) V[l[i]].push_back({x[i], r[i]});
priority_queue <pair <int, int>> H;
H.push({0, INT_MAX});
for(int i = 0; i < N; i++)
{
for(pair <int, int> p : V[i]) H.push(p);
while(H.top().second < i) H.pop();
O[i] = H.top().first;
}
for(int i = 0; i < N; i++) V[i] = vector <pair <int, int>>();
for(int i = 0; i < Q; i++) if(t[i] == 2) V[l[i]].push_back({x[i], r[i]});
while(H.size()) H.pop();
H.push({0, INT_MAX});
for(int i = 0; i < N; i++)
{
for(pair <int, int> p : V[i]) H.push({-p.first, p.second});
while(H.top().second < i) H.pop();
O[i] = min(-H.top().first, O[i]);
}
return;
}
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