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답안 #810955

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
810955 2023-08-06T18:10:39 Z vjudge1 Tents (JOI18_tents) C++17
100 / 100
 77 ms 70876 KB 
#include <bits/stdc++.h>
using namespace std;

int32_t main() {
        ios_base::sync_with_stdio(0);
        cin.tie(0);
        int n, m;
        cin >> n >> m;
        const int MOD = 1e9 + 7;
        vector<vector<int64_t>> f(n + 1, vector<int64_t>(m + 1, 1));
        for (int i = 1; i <= n; i++) {
                for (int j = 0; j <= m; j++) {
                        f[i][j] = f[i - 1][j];
                        if (j > 0) (f[i][j] += f[i - 1][j - 1] * j * 4) %= MOD;
                        if (i > 1) (f[i][j] += f[i - 2][j - 1] * (i - 1) * j) %= MOD;
                        if (j > 1) (f[i][j] += f[i - 1][j - 2] * j * (j - 1) / 2) %= MOD;
                }
        }
        cout << (f[n][m] + MOD - 1) % MOD;
}

Subtask #1
48.0 / 48.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 448 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 572 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 980 KB Output is correct

Subtask #2
52.0 / 52.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 448 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 572 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 444 KB Output is correct
15 Correct 49 ms 44132 KB Output is correct
16 Correct 4 ms 3128 KB Output is correct
17 Correct 11 ms 10068 KB Output is correct
18 Correct 14 ms 12500 KB Output is correct
19 Correct 56 ms 51464 KB Output is correct
20 Correct 44 ms 41136 KB Output is correct
21 Correct 33 ms 27220 KB Output is correct
22 Correct 41 ms 26836 KB Output is correct
23 Correct 17 ms 15060 KB Output is correct
24 Correct 77 ms 70876 KB Output is correct
25 Correct 58 ms 52668 KB Output is correct
26 Correct 65 ms 60280 KB Output is correct
27 Correct 75 ms 68084 KB Output is correct