This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "bits/stdc++.h"
//#include "grader.cpp"
#include "wall.h"
using namespace std;
//#define int long long
#define fr first
#define sc second
const int INF=1e9+17,mod=1e9+7;
const int N=2e6+5;
pair<int,int> st[4*N];
int ans[N];
pair<int,int> f(pair<int,int> a, pair<int,int> b){
if(a.sc<b.fr)
return {a.sc,a.sc};
if(a.fr>b.sc)
return {a.fr,a.fr};
return {max(a.fr,b.fr),min(a.sc,b.sc)};
}
void push(int x){
if(st[x]!=make_pair(-INF,INF)){
st[2*x]=f(st[x],st[2*x]);
st[2*x+1]=f(st[x],st[2*x+1]);
st[x]={-INF,INF};
}
}
void update(int x, int l, int r, int lx, int rx, pair<int,int> v){
if(l>rx || r<lx) return;
if(lx<=l && r<=rx){
st[x]=f(v,st[x]);
return;
}
if(l!=r) push(x);
int md=(l+r)/2;
update(2*x,l,md,lx,rx,v);
update(2*x+1,md+1,r,lx,rx,v);
}
void get(int x, int l, int r){
if(l==r){
ans[l]=st[x].fr;
return;
}
push(x);
int md=(l+r)/2;
get(2*x,l,md);
get(2*x+1,md+1,r);
}
int n,k;
void init(int x=1, int l=0, int r=n-1){
if(l==0 && r==n-1)
st[x]={0,0};
else
st[x]={-INF,INF};
if(l==r) return;
int md=(l+r)/2;
init(2*x,l,md);
init(2*x+1,md+1,r);
}
void buildWall(int N, int K, int op[], int left[], int right[], int height[], int finalHeight[]){
n=N;
k=K;
init();
for(int i=0;i<k;i++){
pair<int,int> a={-INF,INF};
if(op[i]==1)
a.fr=height[i];
else
a.sc=height[i];
update(1,0,n-1,left[i],right[i],a);
}
get(1,0,n-1);
for(int i=0;i<n;i++)
finalHeight[i]=ans[i];
}
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