oj.uz

답안 #687625

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
687625 2023-01-26T16:46:08 Z QwertyPi NoM (RMI21_nom) C++14
100 / 100
 167 ms 54264 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;

int dp[2001][2001];
int a[2001], s[2001];
int c[2001][2001];
const int MOD = 1e9 + 7;

void chadd(int& x, int y) { x += y; x %= MOD; }

int C(int n, int r){
    if(r < 0 || r > n) return 0;
    return c[n][r];
}

int32_t main(){
    int N, M; cin >> N >> M;
    for(int i = 0; i < M; i++) a[i] = (N * 2 + i) / M;
    for(int i = 0; i < M; i++) s[i + 1] = s[i] + a[i];
    dp[0][0] = 1;
    for(int i = 0; i <= 2000; i++){
        c[i][0] = c[i][i] = 1;
        for(int j = 1; j < i; j++){
            c[i][j] = (c[i - 1][j - 1] + c[i - 1][j]) % MOD;
        }
    }
    for(int i = 0; i < M; i++){
        for(int j = 0; j <= N; j++){
            for(int k = 0; k <= a[i]; k++){
                int j2 = j + (a[i] - k) - k; if(j2 < 0 || j2 > N) continue;
                chadd(dp[i + 1][j2], dp[i][j] * C(j, k) % MOD * C(N - (s[i] + j) / 2, a[i] - k) % MOD);
            }
        }
    }

    int ans = dp[M][0];
    for(int i = 0; i < N; i++){
        ans = ans * 2 % MOD;   
    }
    for(int i = 0; i < M; i++){
        for(int j = 1; j <= a[i]; j++){
            ans = ans * j % MOD;
        }
    }
    cout << ans << endl;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 22996 KB Output is correct
2 Correct 13 ms 22956 KB Output is correct
3 Correct 13 ms 22992 KB Output is correct
4 Correct 12 ms 22972 KB Output is correct
5 Correct 14 ms 22992 KB Output is correct
6 Correct 12 ms 23000 KB Output is correct
7 Correct 12 ms 22996 KB Output is correct
8 Correct 13 ms 22968 KB Output is correct
9 Correct 15 ms 22968 KB Output is correct
10 Correct 12 ms 22996 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 22996 KB Output is correct
2 Correct 13 ms 22956 KB Output is correct
3 Correct 13 ms 22992 KB Output is correct
4 Correct 12 ms 22972 KB Output is correct
5 Correct 14 ms 22992 KB Output is correct
6 Correct 12 ms 23000 KB Output is correct
7 Correct 12 ms 22996 KB Output is correct
8 Correct 13 ms 22968 KB Output is correct
9 Correct 15 ms 22968 KB Output is correct
10 Correct 12 ms 22996 KB Output is correct
11 Correct 13 ms 23260 KB Output is correct
12 Correct 13 ms 23124 KB Output is correct
13 Correct 12 ms 22956 KB Output is correct
14 Correct 12 ms 23124 KB Output is correct
15 Correct 12 ms 23216 KB Output is correct
16 Correct 12 ms 23036 KB Output is correct
17 Correct 12 ms 23124 KB Output is correct
18 Correct 14 ms 23220 KB Output is correct
19 Correct 13 ms 22996 KB Output is correct

Subtask #3
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 22996 KB Output is correct
2 Correct 13 ms 22956 KB Output is correct
3 Correct 13 ms 22992 KB Output is correct
4 Correct 12 ms 22972 KB Output is correct
5 Correct 14 ms 22992 KB Output is correct
6 Correct 12 ms 23000 KB Output is correct
7 Correct 12 ms 22996 KB Output is correct
8 Correct 13 ms 22968 KB Output is correct
9 Correct 15 ms 22968 KB Output is correct
10 Correct 12 ms 22996 KB Output is correct
11 Correct 13 ms 23260 KB Output is correct
12 Correct 13 ms 23124 KB Output is correct
13 Correct 12 ms 22956 KB Output is correct
14 Correct 12 ms 23124 KB Output is correct
15 Correct 12 ms 23216 KB Output is correct
16 Correct 12 ms 23036 KB Output is correct
17 Correct 12 ms 23124 KB Output is correct
18 Correct 14 ms 23220 KB Output is correct
19 Correct 13 ms 22996 KB Output is correct
20 Correct 12 ms 23032 KB Output is correct
21 Correct 13 ms 23348 KB Output is correct
22 Correct 14 ms 24532 KB Output is correct
23 Correct 15 ms 23036 KB Output is correct
24 Correct 14 ms 23892 KB Output is correct
25 Correct 14 ms 24404 KB Output is correct
26 Correct 13 ms 23088 KB Output is correct
27 Correct 15 ms 24860 KB Output is correct

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 22996 KB Output is correct
2 Correct 13 ms 22956 KB Output is correct
3 Correct 13 ms 22992 KB Output is correct
4 Correct 12 ms 22972 KB Output is correct
5 Correct 14 ms 22992 KB Output is correct
6 Correct 12 ms 23000 KB Output is correct
7 Correct 12 ms 22996 KB Output is correct
8 Correct 13 ms 22968 KB Output is correct
9 Correct 15 ms 22968 KB Output is correct
10 Correct 12 ms 22996 KB Output is correct
11 Correct 13 ms 23260 KB Output is correct
12 Correct 13 ms 23124 KB Output is correct
13 Correct 12 ms 22956 KB Output is correct
14 Correct 12 ms 23124 KB Output is correct
15 Correct 12 ms 23216 KB Output is correct
16 Correct 12 ms 23036 KB Output is correct
17 Correct 12 ms 23124 KB Output is correct
18 Correct 14 ms 23220 KB Output is correct
19 Correct 13 ms 22996 KB Output is correct
20 Correct 12 ms 23032 KB Output is correct
21 Correct 13 ms 23348 KB Output is correct
22 Correct 14 ms 24532 KB Output is correct
23 Correct 15 ms 23036 KB Output is correct
24 Correct 14 ms 23892 KB Output is correct
25 Correct 14 ms 24404 KB Output is correct
26 Correct 13 ms 23088 KB Output is correct
27 Correct 15 ms 24860 KB Output is correct
28 Correct 17 ms 23124 KB Output is correct
29 Correct 22 ms 25964 KB Output is correct
30 Correct 28 ms 28212 KB Output is correct
31 Correct 17 ms 23028 KB Output is correct
32 Correct 21 ms 26160 KB Output is correct
33 Correct 26 ms 29096 KB Output is correct
34 Correct 35 ms 32844 KB Output is correct

Subtask #5
48.0 / 48.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 22996 KB Output is correct
2 Correct 13 ms 22956 KB Output is correct
3 Correct 13 ms 22992 KB Output is correct
4 Correct 12 ms 22972 KB Output is correct
5 Correct 14 ms 22992 KB Output is correct
6 Correct 12 ms 23000 KB Output is correct
7 Correct 12 ms 22996 KB Output is correct
8 Correct 13 ms 22968 KB Output is correct
9 Correct 15 ms 22968 KB Output is correct
10 Correct 12 ms 22996 KB Output is correct
11 Correct 13 ms 23260 KB Output is correct
12 Correct 13 ms 23124 KB Output is correct
13 Correct 12 ms 22956 KB Output is correct
14 Correct 12 ms 23124 KB Output is correct
15 Correct 12 ms 23216 KB Output is correct
16 Correct 12 ms 23036 KB Output is correct
17 Correct 12 ms 23124 KB Output is correct
18 Correct 14 ms 23220 KB Output is correct
19 Correct 13 ms 22996 KB Output is correct
20 Correct 12 ms 23032 KB Output is correct
21 Correct 13 ms 23348 KB Output is correct
22 Correct 14 ms 24532 KB Output is correct
23 Correct 15 ms 23036 KB Output is correct
24 Correct 14 ms 23892 KB Output is correct
25 Correct 14 ms 24404 KB Output is correct
26 Correct 13 ms 23088 KB Output is correct
27 Correct 15 ms 24860 KB Output is correct
28 Correct 17 ms 23124 KB Output is correct
29 Correct 22 ms 25964 KB Output is correct
30 Correct 28 ms 28212 KB Output is correct
31 Correct 17 ms 23028 KB Output is correct
32 Correct 21 ms 26160 KB Output is correct
33 Correct 26 ms 29096 KB Output is correct
34 Correct 35 ms 32844 KB Output is correct
35 Correct 44 ms 23192 KB Output is correct
36 Correct 166 ms 49516 KB Output is correct
37 Correct 42 ms 23252 KB Output is correct
38 Correct 81 ms 35764 KB Output is correct
39 Correct 98 ms 46420 KB Output is correct
40 Correct 167 ms 54264 KB Output is correct