oj.uz

Submission #1010400

# Submission time Handle Problem Language Result Execution time Memory
1010400 2024-06-29T04:39:07 Z thinknoexit Soccer Stadium (IOI23_soccer) C++17
65.5 / 100
 268 ms 70692 KB 
#include "soccer.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 2020;
int n;
int f[N][N], qs[N][N];
int l[N], r[N];
// check if all empty cell are regular stadium
bool all_can() {
    for (int i = 1;i <= n;i++) {
        for (int j = 1;j <= n + 1;j++) {
            if (f[i][j - 1] != f[i][j]) {
                if (!l[i]) l[i] = j;
                else if (!r[i]) r[i] = j - 1;
                else return 0;
            }
        }
    }
    for (int j = 1;j <= n;j++) {
        int cnt = 0;
        for (int i = 1;i <= n;i++) {
            cnt += f[i - 1][j] != f[i][j];
        }
        if (cnt > 2) return 0;
    }
    for (int i = 1;i <= n;i++) {
        if (l[i] == 0) continue;
        for (int j = 1;j <= n;j++) {
            if (l[j] == 0) continue;
            bool ch = (l[i] <= l[j] && r[j] <= r[i]) || (l[j] <= l[i] && r[i] <= r[j]);
            if (!ch) return 0;
        }
    }
    return 1;
}
int dp[33][33][33][33], mx;
int biggest_stadium(int NN, vector<vector<int>> F) {
    n = NN;
    int empty_cell = 0;
    for (int i = 1;i <= n;i++) {
        f[0][i] = f[n + 1][i] = f[i][0] = f[i][n + 1] = 1;
        for (int j = 1;j <= n;j++) {
            f[i][j] = F[i - 1][j - 1];
            qs[i][j] = qs[i][j - 1] + f[i][j];
            empty_cell += f[i][j] == 0;
        }
    }
    if (all_can()) return empty_cell;
    if (empty_cell == n * n - 1) {
        int mx = 0;
        for (int i = 1;i <= n && !mx;i++) {
            for (int j = 1;j <= n && !mx;j++) {
                if (f[i][j]) {
                    mx = max(mx, (i - 1) * n + (j - 1) * n - (i - 1) * (j - 1));
                    mx = max(mx, (n - i) * n + (j - 1) * n - (n - i) * (j - 1));
                    mx = max(mx, (i - 1) * n + (n - j) * n - (i - 1) * (n - j));
                    mx = max(mx, (n - i) * n + (n - j) * n - (n - i) * (n - j));
                }
            }
        }
        return mx;
    }
    if (n > 30) return 0;
    // dp[i][j][l][r] -> soccer stadium from i -> j can only place in (l, r) interval
    memset(dp, 0xc0, sizeof dp);
    // Base Case
    for (int i = 1;i <= n;i++) {
        for (int l = 1;l <= n;l++) {
            for (int r = l;r <= n;r++) {
                if (qs[i][r] - qs[i][l - 1] == 0) dp[i][i][l][r] = r - l + 1;
            }
        }
    }
    // Calcualte DP
    for (int k = 1;k < n;k++) {
        for (int i = 1;i <= n - k;i++) {
            int j = i + k;
            for (int l = 1;l <= n;l++) {
                for (int r = l;r <= n;r++) {
                    int& v = dp[i][j][l][r];
                    for (int l1 = 1;l1 <= l;l1++) {
                        for (int r1 = r;r1 <= n;r1++) {
                            if (qs[j][r] - qs[j][l - 1] == 0)
                                v = max(v, dp[i][j - 1][l1][r1] + r - l + 1);
                            if (qs[i][r] - qs[i][l - 1] == 0)
                                v = max(v, dp[i + 1][j][l1][r1] + r - l + 1);
                        }
                    }
                }
            }
        }
    }
    for (int i = 1;i <= n;i++) for (int j = 1;j <= n;j++)
        for (int l = 1;l <= n;l++) for (int r = 1;r <= n;r++) {
            mx = max(mx, dp[i][j][l][r]);
        }
    return mx;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4952 KB ok

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 1 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 1 ms 1372 KB ok
8 Correct 15 ms 8796 KB ok
9 Correct 228 ms 70484 KB ok

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 2 ms 4952 KB ok
4 Correct 2 ms 4952 KB ok
5 Correct 2 ms 5052 KB ok
6 Correct 2 ms 5052 KB ok
7 Correct 2 ms 4956 KB ok
8 Correct 0 ms 348 KB ok
9 Correct 0 ms 348 KB ok
10 Correct 2 ms 5108 KB ok
11 Correct 3 ms 5116 KB ok
12 Correct 3 ms 5056 KB ok
13 Correct 0 ms 452 KB ok

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4952 KB ok
2 Correct 1 ms 344 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 2 ms 4952 KB ok
5 Correct 2 ms 4952 KB ok
6 Correct 2 ms 5052 KB ok
7 Correct 2 ms 5052 KB ok
8 Correct 2 ms 4956 KB ok
9 Correct 0 ms 348 KB ok
10 Correct 0 ms 348 KB ok
11 Correct 2 ms 5108 KB ok
12 Correct 3 ms 5116 KB ok
13 Correct 3 ms 5056 KB ok
14 Correct 0 ms 452 KB ok
15 Correct 2 ms 4952 KB ok
16 Correct 2 ms 4956 KB ok
17 Correct 2 ms 4956 KB ok
18 Correct 2 ms 4952 KB ok
19 Correct 2 ms 4956 KB ok
20 Correct 0 ms 348 KB ok
21 Correct 0 ms 348 KB ok
22 Correct 2 ms 4956 KB ok
23 Correct 2 ms 4956 KB ok
24 Correct 2 ms 4956 KB ok
25 Correct 2 ms 5056 KB ok
26 Correct 2 ms 4956 KB ok

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4952 KB ok
2 Correct 1 ms 344 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 1 ms 348 KB ok
6 Correct 2 ms 4952 KB ok
7 Correct 2 ms 4952 KB ok
8 Correct 2 ms 5052 KB ok
9 Correct 2 ms 5052 KB ok
10 Correct 2 ms 4956 KB ok
11 Correct 0 ms 348 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 2 ms 5108 KB ok
14 Correct 3 ms 5116 KB ok
15 Correct 3 ms 5056 KB ok
16 Correct 0 ms 452 KB ok
17 Correct 2 ms 4952 KB ok
18 Correct 2 ms 4956 KB ok
19 Correct 2 ms 4956 KB ok
20 Correct 2 ms 4952 KB ok
21 Correct 2 ms 4956 KB ok
22 Correct 0 ms 348 KB ok
23 Correct 0 ms 348 KB ok
24 Correct 2 ms 4956 KB ok
25 Correct 2 ms 4956 KB ok
26 Correct 2 ms 4956 KB ok
27 Correct 2 ms 5056 KB ok
28 Correct 2 ms 4956 KB ok
29 Correct 2 ms 4956 KB ok
30 Correct 36 ms 5212 KB ok
31 Correct 27 ms 5212 KB ok
32 Correct 26 ms 5212 KB ok
33 Correct 25 ms 5364 KB ok
34 Correct 0 ms 600 KB ok
35 Correct 0 ms 600 KB ok
36 Correct 35 ms 5340 KB ok
37 Correct 29 ms 5208 KB ok
38 Correct 26 ms 5212 KB ok
39 Correct 27 ms 5212 KB ok
40 Correct 29 ms 5212 KB ok
41 Correct 31 ms 5208 KB ok

Subtask #5
4.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4952 KB ok
2 Correct 1 ms 344 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 1 ms 348 KB ok
6 Correct 2 ms 4952 KB ok
7 Correct 2 ms 4952 KB ok
8 Correct 2 ms 5052 KB ok
9 Correct 2 ms 5052 KB ok
10 Correct 2 ms 4956 KB ok
11 Correct 0 ms 348 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 2 ms 5108 KB ok
14 Correct 3 ms 5116 KB ok
15 Correct 3 ms 5056 KB ok
16 Correct 0 ms 452 KB ok
17 Correct 2 ms 4952 KB ok
18 Correct 2 ms 4956 KB ok
19 Correct 2 ms 4956 KB ok
20 Correct 2 ms 4952 KB ok
21 Correct 2 ms 4956 KB ok
22 Correct 0 ms 348 KB ok
23 Correct 0 ms 348 KB ok
24 Correct 2 ms 4956 KB ok
25 Correct 2 ms 4956 KB ok
26 Correct 2 ms 4956 KB ok
27 Correct 2 ms 5056 KB ok
28 Correct 2 ms 4956 KB ok
29 Correct 2 ms 4956 KB ok
30 Correct 36 ms 5212 KB ok
31 Correct 27 ms 5212 KB ok
32 Correct 26 ms 5212 KB ok
33 Correct 25 ms 5364 KB ok
34 Correct 0 ms 600 KB ok
35 Correct 0 ms 600 KB ok
36 Correct 35 ms 5340 KB ok
37 Correct 29 ms 5208 KB ok
38 Correct 26 ms 5212 KB ok
39 Correct 27 ms 5212 KB ok
40 Correct 29 ms 5212 KB ok
41 Correct 31 ms 5208 KB ok
42 Partially correct 14 ms 8796 KB partial
43 Partially correct 15 ms 8792 KB partial
44 Partially correct 14 ms 9052 KB partial
45 Partially correct 14 ms 8796 KB partial
46 Partially correct 21 ms 8708 KB partial
47 Partially correct 14 ms 8788 KB partial
48 Correct 15 ms 8852 KB ok
49 Partially correct 15 ms 8788 KB partial
50 Partially correct 15 ms 8792 KB partial
51 Partially correct 14 ms 8796 KB partial
52 Partially correct 14 ms 8796 KB partial
53 Partially correct 15 ms 8796 KB partial
54 Partially correct 20 ms 9048 KB partial
55 Partially correct 15 ms 8796 KB partial
56 Partially correct 15 ms 8800 KB partial
57 Partially correct 17 ms 8792 KB partial
58 Partially correct 14 ms 8796 KB partial
59 Partially correct 14 ms 8796 KB partial

Subtask #6
7.5 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4952 KB ok
2 Correct 1 ms 344 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 1 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 1 ms 1372 KB ok
9 Correct 15 ms 8796 KB ok
10 Correct 228 ms 70484 KB ok
11 Correct 2 ms 4952 KB ok
12 Correct 2 ms 4952 KB ok
13 Correct 2 ms 5052 KB ok
14 Correct 2 ms 5052 KB ok
15 Correct 2 ms 4956 KB ok
16 Correct 0 ms 348 KB ok
17 Correct 0 ms 348 KB ok
18 Correct 2 ms 5108 KB ok
19 Correct 3 ms 5116 KB ok
20 Correct 3 ms 5056 KB ok
21 Correct 0 ms 452 KB ok
22 Correct 2 ms 4952 KB ok
23 Correct 2 ms 4956 KB ok
24 Correct 2 ms 4956 KB ok
25 Correct 2 ms 4952 KB ok
26 Correct 2 ms 4956 KB ok
27 Correct 0 ms 348 KB ok
28 Correct 0 ms 348 KB ok
29 Correct 2 ms 4956 KB ok
30 Correct 2 ms 4956 KB ok
31 Correct 2 ms 4956 KB ok
32 Correct 2 ms 5056 KB ok
33 Correct 2 ms 4956 KB ok
34 Correct 2 ms 4956 KB ok
35 Correct 36 ms 5212 KB ok
36 Correct 27 ms 5212 KB ok
37 Correct 26 ms 5212 KB ok
38 Correct 25 ms 5364 KB ok
39 Correct 0 ms 600 KB ok
40 Correct 0 ms 600 KB ok
41 Correct 35 ms 5340 KB ok
42 Correct 29 ms 5208 KB ok
43 Correct 26 ms 5212 KB ok
44 Correct 27 ms 5212 KB ok
45 Correct 29 ms 5212 KB ok
46 Correct 31 ms 5208 KB ok
47 Partially correct 14 ms 8796 KB partial
48 Partially correct 15 ms 8792 KB partial
49 Partially correct 14 ms 9052 KB partial
50 Partially correct 14 ms 8796 KB partial
51 Partially correct 21 ms 8708 KB partial
52 Partially correct 14 ms 8788 KB partial
53 Correct 15 ms 8852 KB ok
54 Partially correct 15 ms 8788 KB partial
55 Partially correct 15 ms 8792 KB partial
56 Partially correct 14 ms 8796 KB partial
57 Partially correct 14 ms 8796 KB partial
58 Partially correct 15 ms 8796 KB partial
59 Partially correct 20 ms 9048 KB partial
60 Partially correct 15 ms 8796 KB partial
61 Partially correct 15 ms 8800 KB partial
62 Partially correct 17 ms 8792 KB partial
63 Partially correct 14 ms 8796 KB partial
64 Partially correct 14 ms 8796 KB partial
65 Partially correct 197 ms 70480 KB partial
66 Partially correct 218 ms 70480 KB partial
67 Partially correct 268 ms 70508 KB partial
68 Partially correct 191 ms 70480 KB partial
69 Partially correct 200 ms 70692 KB partial
70 Partially correct 219 ms 70552 KB partial
71 Partially correct 211 ms 70484 KB partial
72 Partially correct 201 ms 70484 KB partial
73 Correct 219 ms 70652 KB ok
74 Correct 229 ms 70556 KB ok
75 Partially correct 228 ms 70636 KB partial
76 Partially correct 211 ms 70548 KB partial
77 Partially correct 213 ms 70480 KB partial
78 Partially correct 199 ms 70680 KB partial
79 Partially correct 207 ms 70484 KB partial
80 Partially correct 209 ms 70692 KB partial
81 Partially correct 194 ms 70484 KB partial
82 Partially correct 211 ms 70544 KB partial
83 Partially correct 216 ms 70484 KB partial
84 Partially correct 216 ms 70484 KB partial
85 Partially correct 255 ms 69460 KB partial
86 Partially correct 247 ms 69532 KB partial
87 Partially correct 219 ms 69440 KB partial
88 Partially correct 220 ms 69456 KB partial
89 Partially correct 204 ms 69672 KB partial
90 Partially correct 213 ms 69652 KB partial
91 Partially correct 205 ms 69460 KB partial
92 Partially correct 208 ms 69460 KB partial
93 Partially correct 231 ms 69648 KB partial
94 Partially correct 205 ms 69544 KB partial
95 Partially correct 210 ms 69460 KB partial
96 Partially correct 211 ms 69456 KB partial
97 Partially correct 208 ms 69456 KB partial
98 Partially correct 202 ms 69456 KB partial
99 Partially correct 207 ms 69520 KB partial
100 Partially correct 201 ms 69456 KB partial
101 Partially correct 206 ms 69664 KB partial
102 Partially correct 204 ms 69660 KB partial
103 Partially correct 219 ms 67548 KB partial
104 Partially correct 208 ms 67424 KB partial
105 Partially correct 211 ms 67408 KB partial
106 Partially correct 225 ms 67468 KB partial
107 Partially correct 230 ms 67408 KB partial
108 Partially correct 200 ms 67408 KB partial
109 Partially correct 219 ms 67392 KB partial