Submission #934854

#	Time	Username	Problem	Language	Result	Execution time	Memory
934854		vjudge1	Quality Of Living (IOI10_quality)	C++17	100 / 100	1141 ms	140432 KiB

quality

#include <bits/stdc++.h>
#define faster ios_base::sync_with_stdio(false);cin.tie(NULL);
#define fi first
#define se second
#define pb push_back
//#define task "hetcuu"
using namespace std;
using ll = long long;
using ld = long double;
const int maxN = 3e3 + 1;
int rectangle(int n ,int m,int h,int w,int a[maxN][maxN]){
    faster
    //freopen(task".inp","r",stdin);
    //freopen(task".out","w",stdout);
    //input(r,c,h,w);
    int pre[maxN][maxN];
    //cin >> n >> m >> h >> w;
    //for(int i = 1; i <= n;++i){
    //    for(int j = 1;j <= m;++j){
    //        cin >> a[i][j];
    //    }
    //}
    int l=(h*w+1)/2, r=n*m, ans=0;
    while(l <= r) {
        int mid = (l + r) / 2;
        bool ok = 0;

        for(int i=1; i<=n; i++)
            for(int j=1; j<=m; j++)
                pre[i][j] = (a[i - 1][j - 1] <= mid) + pre[i-1][j] + pre[i][j-1] - pre[i-1][j-1];

        for(int i=1; i+h-1<=n; i++)
            for(int j=1; j+w-1<=m; j++)
                if(2 * (pre[i+h-1][j+w-1] - pre[i-1][j+w-1] - pre[i+h-1][j-1] + pre[i-1][j-1]) >= h * w) ok = 1;

        if(ok) ans = mid, r = mid - 1;
        else l = mid + 1;
    }
    return ans;
}

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20