Submission #295083

#	Time	Username	Problem	Language	Result	Execution time	Memory
295083		SamAnd	Rectangles (IOI19_rect)	C++17	37 / 100	5065 ms	40440 KiB

rect

#include "rect.h"
#include <bits/stdc++.h>
using namespace std;
#define m_p make_pair
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
typedef long long ll;
const int N = 2505;

int n, m;
int a[N][N];

long long count_rectangles(std::vector<std::vector<int> > A)
{
    n = sz(A);
    m = sz(A[0]);
    for (int i = 1; i <= n; ++i)
    {
        for (int j = 1; j <= m; ++j)
        {
            a[i][j] = A[i - 1][j - 1];
        }
    }
    ll ans = 0;
    for (int x1 = 2; x1 < n; ++x1)
    {
        for (int x2 = x1; x2 < n; ++x2)
        {
            for (int y1_ = 2; y1_ < m; ++y1_)
            {
                for (int y2 = y1_; y2 < m; ++y2)
                {
                    bool z = true;
                    for (int i = x1; i <= x2; ++i)
                    {
                        for (int j = y1_; j <= y2; ++j)
                        {
                            if (a[i][j] >= a[x1 - 1][j])
                            {
                                z = false;
                                break;
                            }
                            if (a[i][j] >= a[x2 + 1][j])
                            {
                                z = false;
                                break;
                            }
                            if (a[i][j] >= a[i][y1_ - 1])
                            {
                                z = false;
                                break;
                            }
                            if (a[i][j] >= a[i][y2 + 1])
                            {
                                z = false;
                                break;
                            }
                        }
                        if (!z)
                            break;
                    }
                    if (z)
                        ++ans;
                }
            }
        }
    }
	return ans;
}

• Subtask 1: 8 / 8
• Subtask 2: 7 / 7
• Subtask 3: 12 / 12
• Subtask 4: 0 / 22
• Subtask 5: 10 / 10
• Subtask 6: 0 / 13
• Subtask 7: 0 / 28