Submission #1267085

#	Time	Username	Problem	Language	Result	Execution time	Memory
1267085		somefolk	Quality Of Living (IOI10_quality)	C++20	100 / 100	1456 ms	71020 KiB

quality

#include <iostream>
#include <cmath>
#include <algorithm>
#include <string>
#include <vector>
#include <map>
#include <unordered_map>
#include <queue>
#include <deque>
#include <set>
#include <unordered_set>
#include <complex>
#include <list>
#include <cassert>
#include <chrono>
#include <random>
#include <stack>
#include <iomanip>
#include <fstream>
#include "quality.h"
using namespace std;

#define endl "\n"
// #define int long long

const int INF = 1e9+7;
const int MOD = 1e9+7;

int rectangle(int n, int m, int h, int w, int a[3001][3001]){
    auto check = [&](int K){
        vector<vector<int>> pref(n+1, vector<int>(m+1, 0));
        for(int i = 1; i <= n; i++){
            for(int j = 1; j <= m; j++){
                pref[i][j] = pref[i-1][j] + pref[i][j-1] - pref[i-1][j-1];
                pref[i][j] += (a[i-1][j-1] <= K ? 1 : -1);
            }
        }

        for(int i = h; i <= n; i++){
            for(int j = w; j <= m; j++){
                int sum = pref[i][j] - pref[i-h][j] - pref[i][j-w] + pref[i-h][j-w];
                if(sum > 0){
                    return true;
                }
            }
        }
        return false;
    };

    int l = 1, r = n*m, sol = -1;
    while(l <= r){
        int mid = (l+r)/2;
        if(check(mid)){
            sol = mid;
            r = mid-1;
        } else {
            l = mid+1;
        }
    }

    return sol;
}

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