oj.uz

Submission #996959

# Submission time Handle Problem Language Result Execution time Memory
996959 2024-06-11T14:08:02 Z MilosMilutinovic Soccer Stadium (IOI23_soccer) C++17
70 / 100
 4500 ms 839416 KB 
#include "soccer.h"
#include <bits/stdc++.h>

using namespace std;

const int MAX = 2005;
const int LOG = 15;

int n, a[MAX][MAX];
int L[MAX][MAX];
int R[MAX][MAX];
int U[MAX][MAX];
int D[MAX][MAX];
int go[MAX][MAX];
int logs[MAX];
int st_U[MAX][MAX][LOG];
int st_D[MAX][MAX][LOG];
int res;
map<array<int, 4>, int> mx;

int query_U(int i, int l, int r) {
  int k = logs[r - l + 1];
  return max(st_U[i][l][k], st_U[i][r - (1 << k) + 1][k]);
}

int query_D(int i, int l, int r) {
  int k = logs[r - l + 1];
  return min(st_D[i][l][k], st_D[i][r - (1 << k) + 1][k]);
}

void rec(int xl, int xr, int yl, int yr, int side, int cur) {
  if (mx[{xl, xr, yl, yr}] >= cur) {
    return;
  }
  res = max(res, cur);
  mx[{xl, xr, yl, yr}] = cur;
  vector<array<int, 5>> f;
  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]);
      int new_x = query_U(xl - 1, ptr, t);
      f.push_back({(t - ptr + 1) * (xl - new_x), new_x, xr, ptr, t});
      //rec(xl - 1, xr, ptr, t, 1, 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]);
      int new_x = query_D(xr + 1, ptr, t);
      f.push_back({(t - ptr + 1) * (new_x - xr), xl, new_x, ptr, t});
      //rec(xl, xr + 1, ptr, t, 0, cur + t - ptr + 1);
      ptr = R[xr + 1][ptr] + 1;
    }
  }
  sort(f.rbegin(), f.rend());
  for (auto& p : f) {
    int sd = (p[1] == xl ? 0 : 1);
    rec(p[1], p[2], p[3], p[4], sd, cur + p[0]);
  }
}

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 j = 0; j < n; j++) {
    for (int i = 0; i < n; i++) {
      if (a[i][j] == 1) {
        continue;
      }
      int p = i;
      while (p + 1 < n && a[p + 1][j] == 0) {
        p += 1;
      }
      for (int k = i; k <= p; k++) {
        U[k][j] = i;
        D[k][j] = p;
      }
      i = p;
    }
  }
  for (int i = 2; i <= n; i++) {
    logs[i] = logs[i >> 1] + 1;
  }
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n; j++) {
      st_U[i][j][0] = U[i][j];
      st_D[i][j][0] = D[i][j];
    }
  }
  for (int k = 1; k < LOG; k++) {
    for (int i = 0; i < n; i++) {
      for (int j = 0; j + (1 << k) <= n; j++) {
        st_U[i][j][k] = max(st_U[i][j][k - 1], st_U[i][j + (1 << (k - 1))][k - 1]);
        st_D[i][j][k] = min(st_D[i][j][k - 1], st_D[i][j + (1 << (k - 1))][k - 1]);
      }
    }
  }
  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;
  vector<array<int, 4>> s;
  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) {
        s.push_back({R[i][j] - j + 1, i, j, R[i][j]});
      }
    }
  }
  sort(s.rbegin(), s.rend());
  for (auto& p : s) {
    int i = p[1];
    int l = p[2], r = p[3];
    rec(i, i, l, r, -1, r - l + 1);
  }
  return res;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16732 KB ok

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16728 KB ok
2 Correct 2 ms 16732 KB ok
3 Correct 2 ms 16732 KB ok
4 Correct 1 ms 16732 KB ok
5 Correct 1 ms 14684 KB ok
6 Correct 2 ms 16984 KB ok
7 Correct 5 ms 43612 KB ok
8 Correct 34 ms 158552 KB ok
9 Correct 524 ms 598400 KB ok

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16728 KB ok
2 Correct 2 ms 16732 KB ok
3 Correct 2 ms 16732 KB ok
4 Correct 2 ms 16884 KB ok
5 Correct 2 ms 16732 KB ok
6 Correct 2 ms 16732 KB ok
7 Correct 2 ms 16732 KB ok
8 Correct 2 ms 16732 KB ok
9 Correct 2 ms 16732 KB ok
10 Correct 2 ms 16824 KB ok
11 Correct 2 ms 16824 KB ok
12 Correct 2 ms 16732 KB ok
13 Correct 2 ms 16732 KB ok

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16732 KB ok
2 Correct 2 ms 16728 KB ok
3 Correct 2 ms 16732 KB ok
4 Correct 2 ms 16732 KB ok
5 Correct 2 ms 16884 KB ok
6 Correct 2 ms 16732 KB ok
7 Correct 2 ms 16732 KB ok
8 Correct 2 ms 16732 KB ok
9 Correct 2 ms 16732 KB ok
10 Correct 2 ms 16732 KB ok
11 Correct 2 ms 16824 KB ok
12 Correct 2 ms 16824 KB ok
13 Correct 2 ms 16732 KB ok
14 Correct 2 ms 16732 KB ok
15 Correct 2 ms 16732 KB ok
16 Correct 2 ms 16732 KB ok
17 Correct 2 ms 16732 KB ok
18 Correct 2 ms 16732 KB ok
19 Correct 2 ms 16732 KB ok
20 Correct 2 ms 16732 KB ok
21 Correct 2 ms 16732 KB ok
22 Correct 2 ms 16728 KB ok
23 Correct 2 ms 16732 KB ok
24 Correct 2 ms 16732 KB ok
25 Correct 2 ms 16728 KB ok
26 Correct 2 ms 16732 KB ok

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16732 KB ok
2 Correct 2 ms 16728 KB ok
3 Correct 2 ms 16732 KB ok
4 Correct 2 ms 16732 KB ok
5 Correct 1 ms 16732 KB ok
6 Correct 2 ms 16732 KB ok
7 Correct 2 ms 16884 KB ok
8 Correct 2 ms 16732 KB ok
9 Correct 2 ms 16732 KB ok
10 Correct 2 ms 16732 KB ok
11 Correct 2 ms 16732 KB ok
12 Correct 2 ms 16732 KB ok
13 Correct 2 ms 16824 KB ok
14 Correct 2 ms 16824 KB ok
15 Correct 2 ms 16732 KB ok
16 Correct 2 ms 16732 KB ok
17 Correct 2 ms 16732 KB ok
18 Correct 2 ms 16732 KB ok
19 Correct 2 ms 16732 KB ok
20 Correct 2 ms 16732 KB ok
21 Correct 2 ms 16732 KB ok
22 Correct 2 ms 16732 KB ok
23 Correct 2 ms 16732 KB ok
24 Correct 2 ms 16728 KB ok
25 Correct 2 ms 16732 KB ok
26 Correct 2 ms 16732 KB ok
27 Correct 2 ms 16728 KB ok
28 Correct 2 ms 16732 KB ok
29 Correct 2 ms 16732 KB ok
30 Correct 3 ms 25180 KB ok
31 Correct 3 ms 25180 KB ok
32 Correct 3 ms 25176 KB ok
33 Correct 2 ms 24924 KB ok
34 Correct 3 ms 24924 KB ok
35 Correct 3 ms 24924 KB ok
36 Correct 3 ms 24924 KB ok
37 Correct 2 ms 22876 KB ok
38 Correct 3 ms 24924 KB ok
39 Correct 2 ms 24924 KB ok
40 Correct 3 ms 24924 KB ok
41 Correct 2 ms 25016 KB ok

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16732 KB ok
2 Correct 2 ms 16728 KB ok
3 Correct 2 ms 16732 KB ok
4 Correct 2 ms 16732 KB ok
5 Correct 1 ms 16732 KB ok
6 Correct 2 ms 16732 KB ok
7 Correct 2 ms 16884 KB ok
8 Correct 2 ms 16732 KB ok
9 Correct 2 ms 16732 KB ok
10 Correct 2 ms 16732 KB ok
11 Correct 2 ms 16732 KB ok
12 Correct 2 ms 16732 KB ok
13 Correct 2 ms 16824 KB ok
14 Correct 2 ms 16824 KB ok
15 Correct 2 ms 16732 KB ok
16 Correct 2 ms 16732 KB ok
17 Correct 2 ms 16732 KB ok
18 Correct 2 ms 16732 KB ok
19 Correct 2 ms 16732 KB ok
20 Correct 2 ms 16732 KB ok
21 Correct 2 ms 16732 KB ok
22 Correct 2 ms 16732 KB ok
23 Correct 2 ms 16732 KB ok
24 Correct 2 ms 16728 KB ok
25 Correct 2 ms 16732 KB ok
26 Correct 2 ms 16732 KB ok
27 Correct 2 ms 16728 KB ok
28 Correct 2 ms 16732 KB ok
29 Correct 2 ms 16732 KB ok
30 Correct 3 ms 25180 KB ok
31 Correct 3 ms 25180 KB ok
32 Correct 3 ms 25176 KB ok
33 Correct 2 ms 24924 KB ok
34 Correct 3 ms 24924 KB ok
35 Correct 3 ms 24924 KB ok
36 Correct 3 ms 24924 KB ok
37 Correct 2 ms 22876 KB ok
38 Correct 3 ms 24924 KB ok
39 Correct 2 ms 24924 KB ok
40 Correct 3 ms 24924 KB ok
41 Correct 2 ms 25016 KB ok
42 Correct 395 ms 180476 KB ok
43 Correct 226 ms 176576 KB ok
44 Correct 495 ms 185424 KB ok
45 Correct 517 ms 182840 KB ok
46 Correct 363 ms 183760 KB ok
47 Correct 40 ms 159824 KB ok
48 Correct 592 ms 164260 KB ok
49 Correct 387 ms 161872 KB ok
50 Correct 156 ms 179392 KB ok
51 Correct 137 ms 172236 KB ok
52 Correct 248 ms 153176 KB ok
53 Correct 36 ms 149328 KB ok
54 Correct 95 ms 152912 KB ok
55 Correct 214 ms 162624 KB ok
56 Correct 42 ms 151896 KB ok
57 Correct 105 ms 170836 KB ok
58 Correct 116 ms 171348 KB ok
59 Correct 129 ms 172108 KB ok

Subtask #6
0.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16732 KB ok
2 Correct 2 ms 16728 KB ok
3 Correct 2 ms 16732 KB ok
4 Correct 2 ms 16732 KB ok
5 Correct 1 ms 16732 KB ok
6 Correct 1 ms 14684 KB ok
7 Correct 2 ms 16984 KB ok
8 Correct 5 ms 43612 KB ok
9 Correct 34 ms 158552 KB ok
10 Correct 524 ms 598400 KB ok
11 Correct 2 ms 16732 KB ok
12 Correct 2 ms 16884 KB ok
13 Correct 2 ms 16732 KB ok
14 Correct 2 ms 16732 KB ok
15 Correct 2 ms 16732 KB ok
16 Correct 2 ms 16732 KB ok
17 Correct 2 ms 16732 KB ok
18 Correct 2 ms 16824 KB ok
19 Correct 2 ms 16824 KB ok
20 Correct 2 ms 16732 KB ok
21 Correct 2 ms 16732 KB ok
22 Correct 2 ms 16732 KB ok
23 Correct 2 ms 16732 KB ok
24 Correct 2 ms 16732 KB ok
25 Correct 2 ms 16732 KB ok
26 Correct 2 ms 16732 KB ok
27 Correct 2 ms 16732 KB ok
28 Correct 2 ms 16732 KB ok
29 Correct 2 ms 16728 KB ok
30 Correct 2 ms 16732 KB ok
31 Correct 2 ms 16732 KB ok
32 Correct 2 ms 16728 KB ok
33 Correct 2 ms 16732 KB ok
34 Correct 2 ms 16732 KB ok
35 Correct 3 ms 25180 KB ok
36 Correct 3 ms 25180 KB ok
37 Correct 3 ms 25176 KB ok
38 Correct 2 ms 24924 KB ok
39 Correct 3 ms 24924 KB ok
40 Correct 3 ms 24924 KB ok
41 Correct 3 ms 24924 KB ok
42 Correct 2 ms 22876 KB ok
43 Correct 3 ms 24924 KB ok
44 Correct 2 ms 24924 KB ok
45 Correct 3 ms 24924 KB ok
46 Correct 2 ms 25016 KB ok
47 Correct 395 ms 180476 KB ok
48 Correct 226 ms 176576 KB ok
49 Correct 495 ms 185424 KB ok
50 Correct 517 ms 182840 KB ok
51 Correct 363 ms 183760 KB ok
52 Correct 40 ms 159824 KB ok
53 Correct 592 ms 164260 KB ok
54 Correct 387 ms 161872 KB ok
55 Correct 156 ms 179392 KB ok
56 Correct 137 ms 172236 KB ok
57 Correct 248 ms 153176 KB ok
58 Correct 36 ms 149328 KB ok
59 Correct 95 ms 152912 KB ok
60 Correct 214 ms 162624 KB ok
61 Correct 42 ms 151896 KB ok
62 Correct 105 ms 170836 KB ok
63 Correct 116 ms 171348 KB ok
64 Correct 129 ms 172108 KB ok
65 Execution timed out 4594 ms 839416 KB Time limit exceeded
66 Halted 0 ms 0 KB -