| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 386285 |
2021-04-06T09:32:11 Z |
ogibogi2004 |
Tents (JOI18_tents) |
C++14 |
|
485 ms |
71148 KB |
#include<bits/stdc++.h>
using namespace std;
#define ll long long
const ll mod=1e9+7;
ll dp[3002][3002];
ll n,m;
ll solve(ll x,ll y)
{
if(x==0||y==0)return 1;
if(x<0||y<0)return 0;
if(dp[x][y]!=-1)return dp[x][y];
ll val=0;
val+=solve(x,y-1);
val+=x*4*solve(x-1,y-1);
val%=mod;
val+=x*(x-1)/2*solve(x-2,y-1);
val%=mod;
val+=x*(y-1)*solve(x-1,y-2);
val%=mod;
return dp[x][y]=val;
}
int main()
{
memset(dp,-1,sizeof(dp));
cin>>n>>m;
cout<<(solve(n,m)+mod-1)%mod<<endl;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
38 ms |
70892 KB |
Output is correct |
| 2 |
Correct |
34 ms |
70892 KB |
Output is correct |
| 3 |
Correct |
35 ms |
70820 KB |
Output is correct |
| 4 |
Correct |
34 ms |
70892 KB |
Output is correct |
| 5 |
Correct |
35 ms |
70892 KB |
Output is correct |
| 6 |
Correct |
36 ms |
70908 KB |
Output is correct |
| 7 |
Correct |
34 ms |
70892 KB |
Output is correct |
| 8 |
Correct |
38 ms |
70892 KB |
Output is correct |
| 9 |
Correct |
35 ms |
70892 KB |
Output is correct |
| 10 |
Correct |
35 ms |
70892 KB |
Output is correct |
| 11 |
Correct |
38 ms |
70892 KB |
Output is correct |
| 12 |
Correct |
36 ms |
70892 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
38 ms |
70892 KB |
Output is correct |
| 2 |
Correct |
34 ms |
70892 KB |
Output is correct |
| 3 |
Correct |
35 ms |
70820 KB |
Output is correct |
| 4 |
Correct |
34 ms |
70892 KB |
Output is correct |
| 5 |
Correct |
35 ms |
70892 KB |
Output is correct |
| 6 |
Correct |
36 ms |
70908 KB |
Output is correct |
| 7 |
Correct |
34 ms |
70892 KB |
Output is correct |
| 8 |
Correct |
38 ms |
70892 KB |
Output is correct |
| 9 |
Correct |
35 ms |
70892 KB |
Output is correct |
| 10 |
Correct |
35 ms |
70892 KB |
Output is correct |
| 11 |
Correct |
38 ms |
70892 KB |
Output is correct |
| 12 |
Correct |
36 ms |
70892 KB |
Output is correct |
| 13 |
Correct |
34 ms |
71020 KB |
Output is correct |
| 14 |
Correct |
37 ms |
70892 KB |
Output is correct |
| 15 |
Correct |
277 ms |
71072 KB |
Output is correct |
| 16 |
Correct |
46 ms |
71020 KB |
Output is correct |
| 17 |
Correct |
86 ms |
71020 KB |
Output is correct |
| 18 |
Correct |
82 ms |
71020 KB |
Output is correct |
| 19 |
Correct |
334 ms |
71088 KB |
Output is correct |
| 20 |
Correct |
272 ms |
71020 KB |
Output is correct |
| 21 |
Correct |
193 ms |
71148 KB |
Output is correct |
| 22 |
Correct |
162 ms |
71020 KB |
Output is correct |
| 23 |
Correct |
50 ms |
70892 KB |
Output is correct |
| 24 |
Correct |
485 ms |
71148 KB |
Output is correct |
| 25 |
Correct |
372 ms |
71148 KB |
Output is correct |
| 26 |
Correct |
407 ms |
71020 KB |
Output is correct |
| 27 |
Correct |
456 ms |
71148 KB |
Output is correct |
