#include <bits/stdc++.h>
using namespace std;
int main(){
int n, m; cin >> n >> m; long long dp[n + 1][m + 1] = {};
for (int i = 1; i <= n; i++) for (int j = 1; j <= m; j++){
dp[i][j] += dp[i - 1][j];
dp[i][j] += (dp[i - 1][j - 1] + 1) * j * 4;
if (j > 1) dp[i][j] += (dp[i - 1][j - 2] + 1) * j * (j - 1) / 2;
if (i > 1) dp[i][j] += (dp[i - 2][j - 1] + 1) * j * (i - 1);
dp[i][j] %= (int)1e9 + 7;
}
cout<<dp[n][m]<<endl;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
288 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
588 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
1 ms |
972 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
288 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
588 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
1 ms |
972 KB |
Output is correct |
13 |
Correct |
0 ms |
204 KB |
Output is correct |
14 |
Correct |
0 ms |
332 KB |
Output is correct |
15 |
Correct |
45 ms |
43980 KB |
Output is correct |
16 |
Correct |
3 ms |
3020 KB |
Output is correct |
17 |
Correct |
10 ms |
10060 KB |
Output is correct |
18 |
Correct |
12 ms |
12360 KB |
Output is correct |
19 |
Correct |
56 ms |
51300 KB |
Output is correct |
20 |
Correct |
40 ms |
41036 KB |
Output is correct |
21 |
Correct |
31 ms |
27128 KB |
Output is correct |
22 |
Correct |
27 ms |
26768 KB |
Output is correct |
23 |
Correct |
15 ms |
14972 KB |
Output is correct |
24 |
Correct |
73 ms |
70732 KB |
Output is correct |
25 |
Correct |
51 ms |
52508 KB |
Output is correct |
26 |
Correct |
57 ms |
60176 KB |
Output is correct |
27 |
Correct |
67 ms |
67916 KB |
Output is correct |