Submission #208958

#	Time	Username	Problem	Language	Result	Execution time	Memory
208958		2Nor22	Quality Of Living (IOI10_quality)	C++14	100 / 100	2952 ms	176984 KiB

quality

#include <unordered_set>
#include <unordered_map>
#include <algorithm>
#include <iostream>
#include <fstream>
#include <string>
#include <cstring>
#include <cstdint>
#include <cstdlib>
#include <cstdio>
#include <cctype>
#include <cmath>
#include <vector>
#include <bitset>
#include <queue>
#include <deque>
#include <stack>
#include <cmath>
#include <tuple>
#include <list>
#include <set>
#include <map>
#define add push_back
#define m_p make_pair
#define fr first
#define sc second
#define endl '\n'
using namespace std;
typedef long long ll;
typedef unsigned long long llu;
typedef long double ld;
typedef pair<ll, ll> pii;
const ll N = 1000005, mod = 998244353, M = 3001;
ll n, m, k, i, j, ans, kaskad[N], matrix[M][M], pref[M][M], h, w;
bool check(ll value)
{
	for (int i = 1; i <= n; ++i)
	{
		for (int j = 1; j <= m; ++j)
		{
			ll x = -1;
			if (matrix[i][j] > value)
				x = 1;
			else if (matrix[i][j] == value)
				x = 0;
			pref[i][j] = pref[i - 1][j] + pref[i][j - 1] - pref[i - 1][j - 1] + x;
		}
	}
	for (int i = h; i <= n; ++i)
	{
		for (int j = w; j <= m; ++j)
		{
			if (pref[i][j] - pref[i - h][j] - pref[i][j - w] + pref[i - h][j - w] <= 0)
				return true;
		}
	}
	return false;
}
void BinarySearch(ll left, ll right)
{
	if (right - left <= 1)
		return;
	ll mid = (left + right) / 2;
	if (!check(mid))
	{
		BinarySearch(mid, right);
	}
	else
	{
		ans = mid;
		BinarySearch(left, mid);
	}
}
int rectangle(int nn, int mm, int hh, int ww, int a[M][M])
{
	n = nn;
	m = mm;
	h = hh;
	w = ww;
	for (int i = 0; i < n; ++i)
	{
		for (int j = 0; j < m; ++j)
		{
			matrix[i + 1][j + 1] = a[i][j];
		}
	}
	BinarySearch(0, n * m);
	return ans;
}

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