Submission #470971

#	Time	Username	Problem	Language	Result	Execution time	Memory
470971		iulia13	Furniture (JOI20_furniture)	C++14	100 / 100	2426 ms	12980 KiB

furniture

#include <bits/stdc++.h>

using namespace std;
const int N = 1005;
int n, m;
bool SePoate[N][N];
int diag[N + N];
int b = 1;
struct ura{
    int x, y;
};
int verif(int x, int y)
{
    if (x < 1 || y < 1 || n < x || m < y)
        return 1;
    return 0;
}
void upd(int x, int y)
{
    if (verif(x, y) || SePoate[x][y] == false)
        return;

    SePoate[x][y] = false;
    diag[x + y]--;
    if (verif(x - 1, y + 1) || SePoate[x - 1][y + 1] == false)
    {
        upd(x, y + 1);
        upd(x - 1, y);
    }
    if (verif(x + 1, y - 1) || SePoate[x + 1][y - 1] == false)
    {
        upd(x, y - 1);
        upd(x + 1, y);
    }
}
int main()
{
    int i, j;
    cin >> n >> m;
    for (i = 1; i <= n; i++)
        for (j = 1; j <= m; j++)
            SePoate[i][j] = true;
    for (i = 1; i <= n; i++)
        for (j = 1; j <= m; j++)
        {
            int nr;
            cin >> nr;
            diag[i + j]++;
            if (nr)
                upd(i, j);
        }
    int q;
    cin >> q;
    while(q--)
    {
        int x, y;
        cin >> x >> y;
        if (SePoate[x][y] == false)
        {
            cout << 1 << '\n';
            continue;
        }
        if (diag[x + y] > 1)
        {
            cout << 1 << '\n';
            upd(x, y);
            continue;
        }
        cout << 0 << '\n';
    }
    return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 95 / 95