Submission #1033997

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1033997	2024-07-25T08:31:14 Z	vjudge1	Tents (JOI18_tents)	C++14	100 / 100	121 ms	70908 KB

tents

#include<bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
    int n,m;
    cin >> n >> m;
    const int mod=1e9+7;
    int DP[n+1][m+1];
    for(int j=0;j<=m;j++){
        DP[0][j]=1;
    }
    for(int i=1;i<=n;i++){
        for(int j=0;j<=m;j++){
            DP[i][j]=0;
            if(i>1&&j>0){
                DP[i][j]+=(DP[i-2][j-1]*((j*(i-1))%mod));
                DP[i][j]%=mod;
            }
            if(j>1){
                DP[i][j]=(DP[i][j]+((DP[i-1][j-2]*((j*(j-1)/2)%mod))%mod));
                DP[i][j]%=mod;
            }
            if(j>0){
                DP[i][j]=(DP[i][j]+((4*DP[i-1][j-1]*j)%mod));
                DP[i][j]%=mod;
            }
            DP[i][j]+=DP[i-1][j];
            DP[i][j]%=mod;
        }
    }
    cout << (DP[n][m]+mod-1)%mod;
}

Subtask #1

48.0 / 48.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	1 ms	604 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	2 ms	1116 KB	Output is correct

Subtask #2

52.0 / 52.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	1 ms	604 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	2 ms	1116 KB	Output is correct
13	Correct	0 ms	344 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	82 ms	44124 KB	Output is correct
16	Correct	5 ms	3160 KB	Output is correct
17	Correct	18 ms	10196 KB	Output is correct
18	Correct	23 ms	12380 KB	Output is correct
19	Correct	97 ms	51440 KB	Output is correct
20	Correct	74 ms	41208 KB	Output is correct
21	Correct	50 ms	27228 KB	Output is correct
22	Correct	45 ms	26728 KB	Output is correct
23	Correct	27 ms	15108 KB	Output is correct
24	Correct	121 ms	70908 KB	Output is correct
25	Correct	90 ms	52568 KB	Output is correct
26	Correct	103 ms	60240 KB	Output is correct
27	Correct	117 ms	67924 KB	Output is correct