Submission #307484

#TimeUsernameProblemLanguageResultExecution timeMemory
307484amunduzbaevWall (IOI14_wall)C++14
0 / 100
1 ms384 KiB
#include "wall.h"
#include <bits/stdc++.h>
#define mn first
#define mx second
using namespace std;
int ans[2000005];
pair<int,int> v[8000000];
struct stree{
    void upd(int x,int mn,int mx){
        v[x].mn=min(max(mn,v[x].mn),mx);
        v[x].mx=min(max(mn,v[x].mx),mx);
    }
    void push(int x,int l,int r){
        if(r!=l){
            upd(x*2+1,v[x].mn,v[x].mx);
            upd(x*2,v[x].mn,v[x].mx);
        }
        v[x]={0,2e9};
    }
    void update(int x,int lx,int rx,int l,int r,int mn,int mx){
        if(lx>=l&&r>=rx){
            upd(x,mn,mx);
            return;
        }
        if(rx<l||lx>r)
            return;
        push(x,lx,rx);
        int m=(lx+rx)/2;
        update(x*2+1,lx,m,l,r,mn,mx);
        update(x*2,m+1,rx,l,r,mn,mx);
    }
    void build(int  x,int l,int r){
        if(l==r){
            ans[l]=v[x].mn;
            return;
        }
        push(x,l,r);
        int m=(l+r)/2;
        build(x*2+1,l,m);
        build(x*2,m+1,r);
    }
};



void buildWall(int n, int k, int w[], int l[], int r[], int h[], int a[]){

    stree t;
    for(int i=0;i<k;i++){
        int mn=w[i]==1 ? h[i]:0,mx=w[i]==2 ? h[i]:INT_MAX;
        t.update(0,0,n-1,l[i],r[i],mn,mx);
    }
    t.build(0,0,n-1);
    for(int i=0;i<n;i++)ans[i]=a[i];
    return ;
}
/*


10 6
1 1 8 4
2 4 9 1
2 3 6 5
1 0 5 3
1 2 2 5
2 6 7 0

*/
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