oj.uz

Submission #996941

# Submission time Handle Problem Language Result Execution time Memory
996941 2024-06-11T13:40:43 Z MilosMilutinovic Soccer Stadium (IOI23_soccer) C++17
30 / 100
 4500 ms 11664 KB 
#include "soccer.h"
#include <bits/stdc++.h>

using namespace std;

const int MAX = 2005;

int n, a[MAX][MAX];
int L[MAX][MAX];
int R[MAX][MAX];
int go[MAX][MAX];
int res;
map<array<int, 5>, bool> was;

void rec(int xl, int xr, int yl, int yr, int cur) {
  if (was[{xl, xr, yl, yr, cur}]) {
    return;
  }
  res = max(res, cur);
  was[{xl, xr, yl, yr}] = true;
  if (xl > 0) {
    // up
    int ptr = yl;
    while (ptr <= yr) {
      if (a[xl - 1][ptr] == 1) {
        ptr = go[xl - 1][ptr];
        continue;
      }
      int t = min(yr, R[xl - 1][ptr]);
      rec(xl - 1, xr, ptr, t, cur + t - ptr + 1);
      ptr = R[xl - 1][ptr] + 1;
    }
  }
  if (xr + 1 < n) {
    // down
    int ptr = yl;
    while (ptr <= yr) {
      if (a[xr + 1][ptr] == 1) {
        ptr = go[xr + 1][ptr];
        continue;
      }
      int t = min(yr, R[xr + 1][ptr]);
      rec(xl, xr + 1, ptr, t, cur + t - ptr + 1);
      ptr = R[xr + 1][ptr] + 1;
    }
  }
}

int biggest_stadium(int N, vector<vector<int>> F) {
  n = N;
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n; j++) {
      a[i][j] = F[i][j];
    }
  }
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n; j++) {
      if (a[i][j] == 1) {
        continue;
      }
      int p = j;
      while (p + 1 < n && a[i][p + 1] == 0) {
        p += 1;
      }
      for (int k = j; k <= p; k++) {
        L[i][k] = j;
        R[i][k] = p;
      }
      j = p;
    }
  }
  for (int i = 0; i < n; i++) {
    for (int j = n - 1; j >= 0; j--) {
      if (a[i][j] == 1) {
        go[i][j] = (j == n - 1 ? n : go[i][j + 1]);
      } else {
        go[i][j] = j;
      }
    }
  }
  res = 0;
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n; j++) {
      if (a[i][j] == 1) {
        continue;
      }
      if (j == 0 || a[i][j - 1] == 1) {
        rec(i, i, j, R[i][j], R[i][j] - j + 1);
      }
    }
  }
  return res;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB ok

Subtask #1
0.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6596 KB ok
2 Correct 1 ms 6492 KB ok
3 Correct 1 ms 6492 KB ok
4 Correct 1 ms 6492 KB ok
5 Correct 1 ms 6492 KB ok
6 Correct 1 ms 6492 KB ok
7 Execution timed out 4554 ms 10936 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6596 KB ok
2 Correct 1 ms 6492 KB ok
3 Correct 1 ms 6492 KB ok
4 Correct 1 ms 6492 KB ok
5 Correct 1 ms 6492 KB ok
6 Correct 1 ms 6492 KB ok
7 Correct 1 ms 6492 KB ok
8 Correct 1 ms 6492 KB ok
9 Correct 1 ms 6492 KB ok
10 Correct 1 ms 6492 KB ok
11 Correct 1 ms 6736 KB ok
12 Correct 1 ms 6492 KB ok
13 Correct 1 ms 6492 KB ok

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB ok
2 Correct 1 ms 6596 KB ok
3 Correct 1 ms 6492 KB ok
4 Correct 1 ms 6492 KB ok
5 Correct 1 ms 6492 KB ok
6 Correct 1 ms 6492 KB ok
7 Correct 1 ms 6492 KB ok
8 Correct 1 ms 6492 KB ok
9 Correct 1 ms 6492 KB ok
10 Correct 1 ms 6492 KB ok
11 Correct 1 ms 6492 KB ok
12 Correct 1 ms 6736 KB ok
13 Correct 1 ms 6492 KB ok
14 Correct 1 ms 6492 KB ok
15 Correct 1 ms 6488 KB ok
16 Correct 1 ms 6488 KB ok
17 Correct 1 ms 6492 KB ok
18 Correct 1 ms 6492 KB ok
19 Correct 1 ms 6492 KB ok
20 Correct 1 ms 6492 KB ok
21 Correct 1 ms 6492 KB ok
22 Correct 1 ms 6488 KB ok
23 Correct 1 ms 6492 KB ok
24 Correct 1 ms 6492 KB ok
25 Correct 1 ms 6492 KB ok
26 Correct 1 ms 6492 KB ok

Subtask #4
0.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB ok
2 Correct 1 ms 6596 KB ok
3 Correct 1 ms 6492 KB ok
4 Correct 1 ms 6492 KB ok
5 Correct 1 ms 6492 KB ok
6 Correct 1 ms 6492 KB ok
7 Correct 1 ms 6492 KB ok
8 Correct 1 ms 6492 KB ok
9 Correct 1 ms 6492 KB ok
10 Correct 1 ms 6492 KB ok
11 Correct 1 ms 6492 KB ok
12 Correct 1 ms 6492 KB ok
13 Correct 1 ms 6492 KB ok
14 Correct 1 ms 6736 KB ok
15 Correct 1 ms 6492 KB ok
16 Correct 1 ms 6492 KB ok
17 Correct 1 ms 6488 KB ok
18 Correct 1 ms 6488 KB ok
19 Correct 1 ms 6492 KB ok
20 Correct 1 ms 6492 KB ok
21 Correct 1 ms 6492 KB ok
22 Correct 1 ms 6492 KB ok
23 Correct 1 ms 6492 KB ok
24 Correct 1 ms 6488 KB ok
25 Correct 1 ms 6492 KB ok
26 Correct 1 ms 6492 KB ok
27 Correct 1 ms 6492 KB ok
28 Correct 1 ms 6492 KB ok
29 Correct 1 ms 6492 KB ok
30 Execution timed out 4596 ms 11664 KB Time limit exceeded
31 Halted 0 ms 0 KB -

Subtask #5
0.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB ok
2 Correct 1 ms 6596 KB ok
3 Correct 1 ms 6492 KB ok
4 Correct 1 ms 6492 KB ok
5 Correct 1 ms 6492 KB ok
6 Correct 1 ms 6492 KB ok
7 Correct 1 ms 6492 KB ok
8 Correct 1 ms 6492 KB ok
9 Correct 1 ms 6492 KB ok
10 Correct 1 ms 6492 KB ok
11 Correct 1 ms 6492 KB ok
12 Correct 1 ms 6492 KB ok
13 Correct 1 ms 6492 KB ok
14 Correct 1 ms 6736 KB ok
15 Correct 1 ms 6492 KB ok
16 Correct 1 ms 6492 KB ok
17 Correct 1 ms 6488 KB ok
18 Correct 1 ms 6488 KB ok
19 Correct 1 ms 6492 KB ok
20 Correct 1 ms 6492 KB ok
21 Correct 1 ms 6492 KB ok
22 Correct 1 ms 6492 KB ok
23 Correct 1 ms 6492 KB ok
24 Correct 1 ms 6488 KB ok
25 Correct 1 ms 6492 KB ok
26 Correct 1 ms 6492 KB ok
27 Correct 1 ms 6492 KB ok
28 Correct 1 ms 6492 KB ok
29 Correct 1 ms 6492 KB ok
30 Execution timed out 4596 ms 11664 KB Time limit exceeded
31 Halted 0 ms 0 KB -

Subtask #6
0.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB ok
2 Correct 1 ms 6596 KB ok
3 Correct 1 ms 6492 KB ok
4 Correct 1 ms 6492 KB ok
5 Correct 1 ms 6492 KB ok
6 Correct 1 ms 6492 KB ok
7 Correct 1 ms 6492 KB ok
8 Execution timed out 4554 ms 10936 KB Time limit exceeded
9 Halted 0 ms 0 KB -