#include <bits/stdc++.h>
using namespace std;
const int mxN = 2e5 + 500;
const int INF = 1e9;
struct seg_tree{
struct Node{
int mn=0,mx=INF;
} seg[mxN*4];
Node dummy,new_node;
void apply(int node,Node v){
seg[node].mn = max(seg[node].mn, v.mn);
seg[node].mx = max(seg[node].mx, seg[node].mn);
seg[node].mx = min(seg[node].mx, v.mx);
seg[node].mn = min(seg[node].mn, seg[node].mx);
}
void push(int node){
apply(node*2+1,seg[node]);
apply(node*2+2,seg[node]);
seg[node]=dummy;
}
void update(int node,int start,int end,int l,int r,Node nd){
if(start>r||end<l) return;
if(start>=l&&end<=r){
apply(node,nd);
return;
}
int mid=start+(end-start)/2;
push(node);
update(node*2+1,start,mid,l,r,nd);
update(node*2+2,mid+1,end,l,r,nd);
}
int qry(int node,int start,int end,int idx){
if(start==end) return seg[node].mn;
int mid=start+(end-start)/2;
push(node);
if(idx<=mid) return qry(node*2+1,start,mid,idx);
else return qry(node*2+2,mid+1,end,idx);
}
} tr;
void buildWall(int n,int k,int op[],int left[],int right[],int height[],int finalHeight[]){
for(int i=0;i<k;++i){
if(op[i]==1){
tr.new_node.mn=height[i];
tr.new_node.mx=INF;
tr.update(0,0,n-1,left[i],right[i],tr.new_node);
}else{
tr.new_node.mn=0;
tr.new_node.mx=height[i];
tr.update(0,0,n-1,left[i],right[i],tr.new_node);
}
}
for(int i=0;i<n;++i){
finalHeight[i]=tr.qry(0,0,n-1,i);
}
}
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