제출 #1203838

#제출 시각아이디문제언어결과실행 시간메모리
1203838AvianshRectangles (IOI19_rect)C++20
10 / 100
3 ms328 KiB
#include "rect.h"

#include <bits/stdc++.h>

using namespace std;

long long count_rectangles(vector<vector<int>> a) {
    int n=a.size();
    int m=a[0].size();
    if(n<3||m<3){
        return 0;
    }
    assert(n==3);
    bool val[m];
    fill(val,val+m,0);
    for(int i = 1;i<m-1;i++){
        if(a[1][i]<a[2][i]&&a[1][i]<a[0][i]){
            val[i]=1;
        }
    }
    long long ans = 0;
    for(int i = 0;i<m-2;i++){
        int mx = 0;
        for(int j = i+1;j<m-1;j++){
            mx=max(mx,a[1][j]);
            if(!val[j])
                break;
            if(mx<a[1][i]&&mx<a[1][j+1]){
                ans++;
            }
        }
    }
	return ans;
}
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