oj.uz

Submission #1059790

# Submission time Handle Problem Language Result Execution time Memory
1059790 2024-08-15T08:12:17 Z aykhn Soccer Stadium (IOI23_soccer) C++17
65.5 / 100
 277 ms 55640 KB 
#include <bits/stdc++.h>
#include "soccer.h"
 
using namespace std;
 
int n;
vector<vector<int>> A;
int dp[31][31][31][31];
int cur;
 
int f(int i, int pos, int l, int r)
{
    if (i < 0 || i >= n) return 0;
    if (l > r) return 0;
    if (pos >= n) return 0;
    if (dp[i][pos][l][r] != -1) return dp[i][pos][l][r];
    vector<int> v;
    v.push_back(l - 1);
    for (int j = l; j <= r; j++) if (A[i][j]) v.push_back(j);
    v.push_back(r + 1);
    int res = 0;
    for (int j = 1; j < v.size(); j++)
    {
        if (i <= cur) 
        {
            res = max(res, f(i - 1, pos + 1, v[j - 1] + 1, v[j] - 1) + (v[j] - v[j - 1] - 1));
            res = max(res, f(cur + (pos - (cur - i)) + 1, pos + 1, v[j - 1] + 1, v[j] - 1) + (v[j] - v[j - 1] - 1));
        }
        else
        {
            res = max(res, f(i + 1, pos + 1, v[j - 1] + 1, v[j] - 1) + (v[j] - v[j - 1] - 1));
            res = max(res, f(cur - (pos - (i - cur)) - 1, pos + 1, v[j - 1] + 1, v[j] - 1) + (v[j] - v[j - 1] - 1));
        }
    }
    return dp[i][pos][l][r] = res;
}
 
int solve()
{
    for (int i = 0; i < 31; i++)
    {
        for (int j = 0; j < 31; j++)
        {
            for (int k = 0; k < 31; k++)
            {
                for (int l = k; l < 31; l++) dp[i][j][k][l] = -1;
            }
        }
    }
    return f(cur, 0, 0, n - 1);
}
 
int calc(int i, int j)
{
    return i * n + j * n - i * j;
}
 
int biggest_stadium(int N, vector<vector<int>> B)
{
    n = N;
    A = B;
    int c = 0;
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            c += A[i][j];
        }
    }
    if (c == 1)
    {
        for (int i = 0; i < n; i++)
        {
            for (int j = 0; j < n; j++)
            {
                if (A[i][j])
                {
                    int i1 = n - i - 1, j1 = n - j - 1;
                    return max({calc(i, j), calc(i1, j), calc(i, j1), calc(i1, j1)});
                }
            }
        }
    }
    int ok = 1, c1 = 0;
    int l[N], r[N], cnt[N];
    array<int, 2> mx = {-1, -1};
    for (int i = 0; i < n; i++)
    {
        cnt[i] = 0;
        l[i] = n + 1, r[i] = -1;
        for (int j = 0; j < n; j++)
        {
            if (A[i][j]) continue;
            cnt[i]++,
            l[i] = min(l[i], j), r[i] = max(r[i], j);
        }
        if (!cnt[i]) continue;
        if (cnt[i] != r[i] - l[i] + 1) ok = 0;
        c1++;
        mx = max(mx, {cnt[i], i});
    }
    if (N > 30)
    {
        assert(mx[1] != -1);
        int lx = mx[1] - 1, rx = mx[1] + 1;
        int last = mx[1];
        while (lx >= 0 || rx < N)
        {
            if (lx >= 0 && cnt[lx] && (rx == N || cnt[lx] >= cnt[rx]))
            {
                if (!(l[last] <= l[lx] && r[lx] <= r[last])) 
                {
                    ok = 0;
                    break;
                }
                last = lx;
                lx--;
            }
            else if (rx < N && cnt[rx] && (lx == -1 || cnt[rx] >= cnt[lx]))
            {
                if (!(l[last] <= l[rx] && r[rx] <= r[last])) 
                {
                    ok = 0;
                    break;
                }
                last = rx;
                rx++;
            }
            else break;
        }
        if (rx - lx - 1 == c1 && ok)
        {
            return n * n - c;
        }
        return 0;
    }
    int res = 0;
    for (cur = 0; cur < n; cur++)
    {
        res = max(res, solve());
    }
    return res;
}

Compilation message

soccer.cpp: In function 'int f(int, int, int, int)':
soccer.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for (int j = 1; j < v.size(); j++)
      |                     ~~^~~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3932 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 0 ms 348 KB ok
5 Correct 1 ms 3932 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 1 ms 348 KB ok
8 Correct 12 ms 3420 KB ok
9 Correct 203 ms 47404 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 3 ms 3932 KB ok
4 Correct 2 ms 3932 KB ok
5 Correct 2 ms 3932 KB ok
6 Correct 3 ms 3932 KB ok
7 Correct 4 ms 3932 KB ok
8 Correct 2 ms 3932 KB ok
9 Correct 2 ms 4048 KB ok
10 Correct 2 ms 3932 KB ok
11 Correct 3 ms 3976 KB ok
12 Correct 2 ms 3932 KB ok
13 Correct 2 ms 3932 KB ok

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3932 KB ok
2 Correct 1 ms 344 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 3 ms 3932 KB ok
5 Correct 2 ms 3932 KB ok
6 Correct 2 ms 3932 KB ok
7 Correct 3 ms 3932 KB ok
8 Correct 4 ms 3932 KB ok
9 Correct 2 ms 3932 KB ok
10 Correct 2 ms 4048 KB ok
11 Correct 2 ms 3932 KB ok
12 Correct 3 ms 3976 KB ok
13 Correct 2 ms 3932 KB ok
14 Correct 2 ms 3932 KB ok
15 Correct 3 ms 3932 KB ok
16 Correct 3 ms 3932 KB ok
17 Correct 3 ms 4024 KB ok
18 Correct 3 ms 3932 KB ok
19 Correct 3 ms 3932 KB ok
20 Correct 3 ms 3928 KB ok
21 Correct 3 ms 3932 KB ok
22 Correct 3 ms 3932 KB ok
23 Correct 4 ms 3932 KB ok
24 Correct 4 ms 3932 KB ok
25 Correct 4 ms 3932 KB ok
26 Correct 4 ms 3932 KB ok

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3932 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 0 ms 348 KB ok
6 Correct 3 ms 3932 KB ok
7 Correct 2 ms 3932 KB ok
8 Correct 2 ms 3932 KB ok
9 Correct 3 ms 3932 KB ok
10 Correct 4 ms 3932 KB ok
11 Correct 2 ms 3932 KB ok
12 Correct 2 ms 4048 KB ok
13 Correct 2 ms 3932 KB ok
14 Correct 3 ms 3976 KB ok
15 Correct 2 ms 3932 KB ok
16 Correct 2 ms 3932 KB ok
17 Correct 3 ms 3932 KB ok
18 Correct 3 ms 3932 KB ok
19 Correct 3 ms 4024 KB ok
20 Correct 3 ms 3932 KB ok
21 Correct 3 ms 3932 KB ok
22 Correct 3 ms 3928 KB ok
23 Correct 3 ms 3932 KB ok
24 Correct 3 ms 3932 KB ok
25 Correct 4 ms 3932 KB ok
26 Correct 4 ms 3932 KB ok
27 Correct 4 ms 3932 KB ok
28 Correct 4 ms 3932 KB ok
29 Correct 3 ms 3932 KB ok
30 Correct 12 ms 4060 KB ok
31 Correct 11 ms 4064 KB ok
32 Correct 10 ms 3932 KB ok
33 Correct 10 ms 4056 KB ok
34 Correct 12 ms 3932 KB ok
35 Correct 11 ms 4052 KB ok
36 Correct 11 ms 3932 KB ok
37 Correct 10 ms 3932 KB ok
38 Correct 10 ms 3932 KB ok
39 Correct 11 ms 3932 KB ok
40 Correct 11 ms 3928 KB ok
41 Correct 11 ms 3932 KB ok

Subtask #5
4.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3932 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 0 ms 348 KB ok
6 Correct 3 ms 3932 KB ok
7 Correct 2 ms 3932 KB ok
8 Correct 2 ms 3932 KB ok
9 Correct 3 ms 3932 KB ok
10 Correct 4 ms 3932 KB ok
11 Correct 2 ms 3932 KB ok
12 Correct 2 ms 4048 KB ok
13 Correct 2 ms 3932 KB ok
14 Correct 3 ms 3976 KB ok
15 Correct 2 ms 3932 KB ok
16 Correct 2 ms 3932 KB ok
17 Correct 3 ms 3932 KB ok
18 Correct 3 ms 3932 KB ok
19 Correct 3 ms 4024 KB ok
20 Correct 3 ms 3932 KB ok
21 Correct 3 ms 3932 KB ok
22 Correct 3 ms 3928 KB ok
23 Correct 3 ms 3932 KB ok
24 Correct 3 ms 3932 KB ok
25 Correct 4 ms 3932 KB ok
26 Correct 4 ms 3932 KB ok
27 Correct 4 ms 3932 KB ok
28 Correct 4 ms 3932 KB ok
29 Correct 3 ms 3932 KB ok
30 Correct 12 ms 4060 KB ok
31 Correct 11 ms 4064 KB ok
32 Correct 10 ms 3932 KB ok
33 Correct 10 ms 4056 KB ok
34 Correct 12 ms 3932 KB ok
35 Correct 11 ms 4052 KB ok
36 Correct 11 ms 3932 KB ok
37 Correct 10 ms 3932 KB ok
38 Correct 10 ms 3932 KB ok
39 Correct 11 ms 3932 KB ok
40 Correct 11 ms 3928 KB ok
41 Correct 11 ms 3932 KB ok
42 Partially correct 13 ms 3420 KB partial
43 Partially correct 14 ms 3420 KB partial
44 Partially correct 13 ms 3232 KB partial
45 Partially correct 17 ms 3420 KB partial
46 Partially correct 14 ms 3420 KB partial
47 Partially correct 13 ms 3420 KB partial
48 Correct 13 ms 3416 KB ok
49 Partially correct 13 ms 3928 KB partial
50 Partially correct 13 ms 3676 KB partial
51 Partially correct 13 ms 3676 KB partial
52 Partially correct 13 ms 3724 KB partial
53 Partially correct 13 ms 3672 KB partial
54 Partially correct 19 ms 3668 KB partial
55 Partially correct 13 ms 3672 KB partial
56 Partially correct 13 ms 3676 KB partial
57 Partially correct 13 ms 3932 KB partial
58 Partially correct 15 ms 3672 KB partial
59 Partially correct 14 ms 3676 KB partial

Subtask #6
7.5 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3932 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 0 ms 348 KB ok
6 Correct 1 ms 3932 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 1 ms 348 KB ok
9 Correct 12 ms 3420 KB ok
10 Correct 203 ms 47404 KB ok
11 Correct 3 ms 3932 KB ok
12 Correct 2 ms 3932 KB ok
13 Correct 2 ms 3932 KB ok
14 Correct 3 ms 3932 KB ok
15 Correct 4 ms 3932 KB ok
16 Correct 2 ms 3932 KB ok
17 Correct 2 ms 4048 KB ok
18 Correct 2 ms 3932 KB ok
19 Correct 3 ms 3976 KB ok
20 Correct 2 ms 3932 KB ok
21 Correct 2 ms 3932 KB ok
22 Correct 3 ms 3932 KB ok
23 Correct 3 ms 3932 KB ok
24 Correct 3 ms 4024 KB ok
25 Correct 3 ms 3932 KB ok
26 Correct 3 ms 3932 KB ok
27 Correct 3 ms 3928 KB ok
28 Correct 3 ms 3932 KB ok
29 Correct 3 ms 3932 KB ok
30 Correct 4 ms 3932 KB ok
31 Correct 4 ms 3932 KB ok
32 Correct 4 ms 3932 KB ok
33 Correct 4 ms 3932 KB ok
34 Correct 3 ms 3932 KB ok
35 Correct 12 ms 4060 KB ok
36 Correct 11 ms 4064 KB ok
37 Correct 10 ms 3932 KB ok
38 Correct 10 ms 4056 KB ok
39 Correct 12 ms 3932 KB ok
40 Correct 11 ms 4052 KB ok
41 Correct 11 ms 3932 KB ok
42 Correct 10 ms 3932 KB ok
43 Correct 10 ms 3932 KB ok
44 Correct 11 ms 3932 KB ok
45 Correct 11 ms 3928 KB ok
46 Correct 11 ms 3932 KB ok
47 Partially correct 13 ms 3420 KB partial
48 Partially correct 14 ms 3420 KB partial
49 Partially correct 13 ms 3232 KB partial
50 Partially correct 17 ms 3420 KB partial
51 Partially correct 14 ms 3420 KB partial
52 Partially correct 13 ms 3420 KB partial
53 Correct 13 ms 3416 KB ok
54 Partially correct 13 ms 3928 KB partial
55 Partially correct 13 ms 3676 KB partial
56 Partially correct 13 ms 3676 KB partial
57 Partially correct 13 ms 3724 KB partial
58 Partially correct 13 ms 3672 KB partial
59 Partially correct 19 ms 3668 KB partial
60 Partially correct 13 ms 3672 KB partial
61 Partially correct 13 ms 3676 KB partial
62 Partially correct 13 ms 3932 KB partial
63 Partially correct 15 ms 3672 KB partial
64 Partially correct 14 ms 3676 KB partial
65 Partially correct 223 ms 55308 KB partial
66 Partially correct 221 ms 55376 KB partial
67 Partially correct 211 ms 55380 KB partial
68 Partially correct 205 ms 55380 KB partial
69 Partially correct 207 ms 55440 KB partial
70 Partially correct 217 ms 55380 KB partial
71 Partially correct 232 ms 55640 KB partial
72 Partially correct 207 ms 55632 KB partial
73 Correct 201 ms 55376 KB ok
74 Correct 201 ms 55380 KB ok
75 Partially correct 215 ms 55376 KB partial
76 Partially correct 234 ms 55304 KB partial
77 Partially correct 202 ms 55376 KB partial
78 Partially correct 209 ms 55376 KB partial
79 Partially correct 209 ms 55380 KB partial
80 Partially correct 197 ms 55308 KB partial
81 Partially correct 197 ms 55200 KB partial
82 Partially correct 212 ms 55316 KB partial
83 Partially correct 205 ms 55456 KB partial
84 Partially correct 206 ms 55380 KB partial
85 Partially correct 196 ms 55628 KB partial
86 Partially correct 225 ms 55376 KB partial
87 Partially correct 206 ms 55380 KB partial
88 Partially correct 198 ms 55436 KB partial
89 Partially correct 202 ms 55376 KB partial
90 Partially correct 217 ms 55380 KB partial
91 Partially correct 206 ms 55380 KB partial
92 Partially correct 207 ms 55380 KB partial
93 Partially correct 244 ms 55308 KB partial
94 Partially correct 207 ms 55304 KB partial
95 Partially correct 235 ms 55324 KB partial
96 Partially correct 228 ms 55376 KB partial
97 Partially correct 208 ms 55376 KB partial
98 Partially correct 218 ms 55376 KB partial
99 Partially correct 218 ms 55440 KB partial
100 Partially correct 220 ms 55312 KB partial
101 Partially correct 222 ms 55312 KB partial
102 Partially correct 277 ms 55312 KB partial
103 Partially correct 226 ms 55308 KB partial
104 Partially correct 249 ms 55436 KB partial
105 Partially correct 220 ms 55376 KB partial
106 Partially correct 244 ms 55308 KB partial
107 Partially correct 216 ms 55440 KB partial
108 Partially correct 220 ms 55376 KB partial
109 Partially correct 266 ms 55380 KB partial