| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 799876 |
2023-08-01T07:26:37 Z |
phoenix |
Tents (JOI18_tents) |
C++17 |
|
94 ms |
71068 KB |
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 3000;
const int MOD = 1e9 + 7;
ll dp[N + 10][N + 10];
int main() {
ios::sync_with_stdio(0);
cin.tie(0);cout.tie(0);
int n, m;
cin >> n >> m;
for(int i = 0; i <= n; i++) dp[i][0] = 1;
for(int j = 0; j <= m; j++) dp[0][j] = 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] += 4 * j * dp[i - 1][j - 1] % MOD;
if(j > 1) dp[i][j] += j * (j - 1) / 2 * dp[i - 1][j - 2] % MOD;
if(i > 1) dp[i][j] += (i - 1) * j * dp[i - 2][j - 1] % MOD;
dp[i][j] %= MOD;
}
}
cout << (dp[n][m] - 1 + MOD) % MOD;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
468 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 5 |
Correct |
1 ms |
720 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
852 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
716 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1748 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
2 ms |
2124 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
468 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 5 |
Correct |
1 ms |
720 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
852 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
716 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1748 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
2 ms |
2124 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
4 ms |
9612 KB |
Output is correct |
| 15 |
Correct |
63 ms |
55136 KB |
Output is correct |
| 16 |
Correct |
4 ms |
4052 KB |
Output is correct |
| 17 |
Correct |
14 ms |
12876 KB |
Output is correct |
| 18 |
Correct |
18 ms |
17100 KB |
Output is correct |
| 19 |
Correct |
72 ms |
62924 KB |
Output is correct |
| 20 |
Correct |
59 ms |
50852 KB |
Output is correct |
| 21 |
Correct |
40 ms |
33812 KB |
Output is correct |
| 22 |
Correct |
39 ms |
35424 KB |
Output is correct |
| 23 |
Correct |
25 ms |
27092 KB |
Output is correct |
| 24 |
Correct |
94 ms |
71068 KB |
Output is correct |
| 25 |
Correct |
73 ms |
61332 KB |
Output is correct |
| 26 |
Correct |
83 ms |
66740 KB |
Output is correct |
| 27 |
Correct |
89 ms |
69132 KB |
Output is correct |
