#include "wall.h"
#include <bits/stdc++.h>
#define ADD 1
using namespace std;
int const maxn = 1 << 21;
int N;
pair<int, int> t[(maxn << 2) + 9];
void push(int v){
t[v << 1].first = min(max(t[v << 1].first, t[v].first), t[v].second);
t[v << 1 | 1].first = min(max(t[v << 1 | 1].first, t[v].first), t[v].second);
t[v << 1].second = min(max(t[v << 1].second, t[v].first), t[v].second);
t[v << 1 | 1].second = min(max(t[v << 1 | 1].second, t[v].first), t[v].second);
}
void update(int v, int tl, int tr, int l, int r, int h, int upd){
if(l <= tl && tr <= r) {
if (upd == ADD){
t[v].first = max(t[v].first, h);
t[v].second = max(t[v].second, h);
} else{
t[v].first = min(t[v].first, h);
t[v].second = min(t[v].second, h);
}
return;
}
if(l > tr || r < tl)
return;
push(v);
int tm = tl + tr >> 1;
update(v << 1, tl, tm, l, r, h, upd);
update(v << 1 | 1, tm + 1, tr, l, r, h, upd);
t[v].first = min(t[v << 1].first, t[v << 1 | 1].first);
t[v].second = max(t[v << 1].second, t[v << 1 | 1].second);
}
int res[maxn];
void rebuild(int v, int tl, int tr){
if (tl == tr){
res[tl] = t[v].first;
return;
}
push(v);
int tm = tl + tr >> 1;
rebuild(v << 1, tl, tm);
rebuild(v << 1 | 1, tm + 1, tr);
}
void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
N = n;
for (int i = 0; i < k; i++)
update(1, 0, maxn, left[i], right[i], height[i], op[i]);
rebuild(1, 0, maxn);
for(int i = 0; i < n; i ++)
finalHeight[i] = res[i];
}
