oj.uz

Submission #297788

# Submission time Handle Problem Language Result Execution time Memory
297788 2020-09-11T23:10:45 Z eriksuenderhauf Furniture (JOI20_furniture) C++17
100 / 100
 396 ms 23928 KB 
#include <bits/stdc++.h>
using namespace std;
int in[1005][1005], out[1005][1005], a[1005][1005], cnt[2005];

void remove(int i, int j) {
  if (a[i][j]) return;
  a[i][j] = 1, cnt[i + j]--;
  if (--in[i+1][j] == 0) remove(i+1, j);
  if (--in[i][j+1] == 0) remove(i, j+1);
  if (--out[i-1][j] == 0) remove(i-1, j);
  if (--out[i][j-1] == 0) remove(i, j-1);
}

int main() {
  ios_base::sync_with_stdio(false); cin.tie(0);
  int n, m; cin >> n >> m;
  for (int i = 1; i <= n; a[i][0] = a[i][m+1] = 1, i++) {
    for (int j = 1; j <= m; a[0][j] = a[n+1][j] = 1, j++) {
      cnt[i+j]++;
      in[i+1][j]++, in[i][j+1]++;
      out[i-1][j]++, out[i][j-1]++;
    }
  }
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= m; j++) {
      int x; cin >> x;
      if (x) remove(i, j);
    }
  }
  int q; cin >> q;
  while (q--) {
    int i, j, ans = 0; cin >> i >> j;
    if (cnt[i + j] != 1 || a[i][j] == 1)
      remove(i, j), ans = 1;
    cout << ans << "\n";
  }
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1280 KB Output is correct
2 Correct 2 ms 1536 KB Output is correct
3 Correct 3 ms 1536 KB Output is correct
4 Correct 4 ms 1536 KB Output is correct
5 Correct 4 ms 1664 KB Output is correct
6 Correct 4 ms 1664 KB Output is correct
7 Correct 4 ms 1664 KB Output is correct
8 Correct 4 ms 1664 KB Output is correct
9 Correct 4 ms 1664 KB Output is correct

Subtask #2
95.0 / 95.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1280 KB Output is correct
2 Correct 2 ms 1536 KB Output is correct
3 Correct 3 ms 1536 KB Output is correct
4 Correct 4 ms 1536 KB Output is correct
5 Correct 4 ms 1664 KB Output is correct
6 Correct 4 ms 1664 KB Output is correct
7 Correct 4 ms 1664 KB Output is correct
8 Correct 4 ms 1664 KB Output is correct
9 Correct 4 ms 1664 KB Output is correct
10 Correct 11 ms 1408 KB Output is correct
11 Correct 3 ms 1024 KB Output is correct
12 Correct 196 ms 16780 KB Output is correct
13 Correct 79 ms 13560 KB Output is correct
14 Correct 334 ms 20964 KB Output is correct
15 Correct 369 ms 21216 KB Output is correct
16 Correct 356 ms 22392 KB Output is correct
17 Correct 379 ms 23416 KB Output is correct
18 Correct 359 ms 22904 KB Output is correct
19 Correct 396 ms 23800 KB Output is correct
20 Correct 340 ms 23836 KB Output is correct
21 Correct 392 ms 23928 KB Output is correct