oj.uz

Submission #306781

# Submission time Handle Problem Language Result Execution time Memory
306781 2020-09-26T09:24:58 Z MrDomino Furniture (JOI20_furniture) C++14
5 / 100
 5000 ms 17912 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;

const int N = 2000 + 7;
int n;
int m;
int a[N][N];
int down[N][N];

void full()
{
    down[n + 1][m] = down[n][m + 1] = 1;
    for (int i = n; i >= 1; i--)
    {
        for (int j = m; j >= 1; j--)
        {
            if (a[i][j] == 0)
            {
                down[i][j] = (down[i + 1][j] > 0) + (down[i][j + 1] > 0);
            }
            else
            {
                down[i][j] = 0;
            }
        }
    }
}

void upd(int r, int c)
{
    for (int i = r; i >= 1; i--)
    {
        for (int j = c; j >= 1; j--)
        {
            if (a[i][j] == 0)
            {
                down[i][j] = (down[i + 1][j] > 0) + (down[i][j + 1] > 0);
            }
            else
            {
                down[i][j] = 0;
            }
        }
    }
}

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);

    cin >> n >> m;
    for (int i = 1; i <= n; i++)
    {
        for (int j = 1; j <= m; j++)
        {
            cin >> a[i][j];
        }
    }
    full();
    int q;
    cin >> q;
    for (int i = 1; i <= q; i++)
    {
        int r, c;
        cin >> r >> c;
        a[r][c] = 1;
        upd(r, c);
        if (down[1][1] == 0)
        {
            a[r][c] = 0;
            upd(r, c);
            cout << "0\n";
        }
        else
        {
            cout << "1\n";
        }
    }
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1024 KB Output is correct
2 Correct 20 ms 1152 KB Output is correct
3 Correct 39 ms 1272 KB Output is correct
4 Correct 78 ms 1152 KB Output is correct
5 Correct 88 ms 1280 KB Output is correct
6 Correct 105 ms 1292 KB Output is correct
7 Correct 82 ms 1424 KB Output is correct
8 Correct 78 ms 1280 KB Output is correct
9 Correct 67 ms 1280 KB Output is correct

Subtask #2
0.0 / 95.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1024 KB Output is correct
2 Correct 20 ms 1152 KB Output is correct
3 Correct 39 ms 1272 KB Output is correct
4 Correct 78 ms 1152 KB Output is correct
5 Correct 88 ms 1280 KB Output is correct
6 Correct 105 ms 1292 KB Output is correct
7 Correct 82 ms 1424 KB Output is correct
8 Correct 78 ms 1280 KB Output is correct
9 Correct 67 ms 1280 KB Output is correct
10 Correct 1492 ms 1400 KB Output is correct
11 Correct 62 ms 896 KB Output is correct
12 Execution timed out 5094 ms 17912 KB Time limit exceeded
13 Halted 0 ms 0 KB -