| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 86966 |
2018-11-29T02:22:07 Z |
Dat160601 |
Tents (JOI18_tents) |
C++17 |
|
143 ms |
71304 KB |
#include <bits/stdc++.h>
using namespace std;
int n, m;
long long dp[3007][3007];
const long long mod = 1e9 + 7;
int main(){
ios_base::sync_with_stdio(0);
cin >> n >> m;
for(int i = 0; i <= m; i++) dp[0][i] = 1;
for(int i = 0; i <= n; i++) dp[i][0] = 1;
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
dp[i][j] = (dp[i - 1][j] + 4LL * j * dp[i - 1][j - 1]) % mod;
if(i >= 2) dp[i][j] = (dp[i][j] + 1LL * (i - 1) * j * dp[i - 2][j - 1]) % mod;
if(j >= 2) dp[i][j] = (dp[i][j] + 1LL * j * (j - 1) / 2LL * dp[i - 1][j - 2]) % mod;
}
}
dp[n][m] = (dp[n][m] - 1 + mod) % mod;
cout << dp[n][m];
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
292 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
672 KB |
Output is correct |
| 4 |
Correct |
3 ms |
1392 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1392 KB |
Output is correct |
| 6 |
Correct |
4 ms |
1564 KB |
Output is correct |
| 7 |
Correct |
4 ms |
1564 KB |
Output is correct |
| 8 |
Correct |
3 ms |
1740 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1740 KB |
Output is correct |
| 10 |
Correct |
4 ms |
2136 KB |
Output is correct |
| 11 |
Correct |
2 ms |
2136 KB |
Output is correct |
| 12 |
Correct |
5 ms |
2544 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
292 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
672 KB |
Output is correct |
| 4 |
Correct |
3 ms |
1392 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1392 KB |
Output is correct |
| 6 |
Correct |
4 ms |
1564 KB |
Output is correct |
| 7 |
Correct |
4 ms |
1564 KB |
Output is correct |
| 8 |
Correct |
3 ms |
1740 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1740 KB |
Output is correct |
| 10 |
Correct |
4 ms |
2136 KB |
Output is correct |
| 11 |
Correct |
2 ms |
2136 KB |
Output is correct |
| 12 |
Correct |
5 ms |
2544 KB |
Output is correct |
| 13 |
Correct |
2 ms |
2544 KB |
Output is correct |
| 14 |
Correct |
9 ms |
10104 KB |
Output is correct |
| 15 |
Correct |
103 ms |
55544 KB |
Output is correct |
| 16 |
Correct |
8 ms |
55544 KB |
Output is correct |
| 17 |
Correct |
24 ms |
55544 KB |
Output is correct |
| 18 |
Correct |
30 ms |
55544 KB |
Output is correct |
| 19 |
Correct |
110 ms |
63300 KB |
Output is correct |
| 20 |
Correct |
93 ms |
63300 KB |
Output is correct |
| 21 |
Correct |
59 ms |
63300 KB |
Output is correct |
| 22 |
Correct |
60 ms |
63300 KB |
Output is correct |
| 23 |
Correct |
39 ms |
63300 KB |
Output is correct |
| 24 |
Correct |
143 ms |
71304 KB |
Output is correct |
| 25 |
Correct |
130 ms |
71304 KB |
Output is correct |
| 26 |
Correct |
133 ms |
71304 KB |
Output is correct |
| 27 |
Correct |
140 ms |
71304 KB |
Output is correct |
