제출 #52148

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
52148	2018-06-24 09:34:15	aquablitz11	Wall (IOI14_wall)	C++14	100 / 100	942 ms	59580 KiB

wall

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#include <bits/stdc++.h>
#include "wall.h"
using namespace std;
const int N = 1<<21;
const int INF = 1e9;
int n, lo[N<<1], hi[N<<1], *ans;
void addtag(int p, int c, int d)
{
    int a = lo[p], b = hi[p];
    lo[p] = min(d, max(a, c));
    hi[p] = max(c, min(b, d));
}
void push(int p, int b, int e)
{
    if (b == e) {
        ans[b] = min(max(ans[b], lo[p]), hi[p]);
    } else {
        int m = (b+e)/2;
        addtag(p<<1, lo[p], hi[p]);
        addtag(p<<1|1, lo[p], hi[p]);
    }
    lo[p] = 0;
    hi[p] = INF;
}
void build(int p=1, int b=0, int e=n-1)
 
 
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컴파일 시 표준 에러 (stderr) 메시지

wall.cpp: In function 'void push(int, int, int)':
wall.cpp:22:13: warning: unused variable 'm' [-Wunused-variable]
         int m = (b+e)/2;
             ^

• Subtask 1: 8 / 8
• Subtask 2: 24 / 24
• Subtask 3: 29 / 29
• Subtask 4: 39 / 39