답안 #707757

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
707757	2023-03-10T03:54:22 Z	ToroTN	Tents (JOI18_tents)	C++14	100 / 100	392 ms	70876 KB

tents

#include<bits/stdc++.h>
using namespace std;
#define ll long long
ll n,m,dp[3005][3005],MOD=1e9+7;
int main()
{
    ios_base::sync_with_stdio(0),cin.tie(0);
    cin >> n >> m;
    for(int i=0;i<=n;i++)dp[i][0]=1;
    for(int i=0;i<=m;i++)dp[0][i]=1;
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=m;j++)
        {
            dp[i][j]+=(dp[i-1][j-1]*(ll)4*j)%MOD;
            dp[i][j]%=MOD;
            if(j>=2)dp[i][j]+=(dp[i-1][j-2]*((ll)j*(j-1)/2))%MOD;
            dp[i][j]%=MOD;
            if(i>=2)dp[i][j]+=(dp[i-2][j-1]*(ll)(i-1)*j)%MOD;
            dp[i][j]%=MOD;
            dp[i][j]+=dp[i-1][j];
            dp[i][j]%=MOD;
        }
    }
    printf("%lld\n",(dp[n][m]-1+MOD)%MOD);
}

Subtask #1

48.0 / 48.0

#	결과	실행 시간	메모리	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	708 KB	Output is correct
6	Correct	2 ms	1344 KB	Output is correct
7	Correct	1 ms	852 KB	Output is correct
8	Correct	1 ms	1348 KB	Output is correct
9	Correct	1 ms	724 KB	Output is correct
10	Correct	3 ms	1748 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	5 ms	2132 KB	Output is correct

Subtask #2

52.0 / 52.0

#	결과	실행 시간	메모리	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	708 KB	Output is correct
6	Correct	2 ms	1344 KB	Output is correct
7	Correct	1 ms	852 KB	Output is correct
8	Correct	1 ms	1348 KB	Output is correct
9	Correct	1 ms	724 KB	Output is correct
10	Correct	3 ms	1748 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	5 ms	2132 KB	Output is correct
13	Correct	1 ms	328 KB	Output is correct
14	Correct	5 ms	9672 KB	Output is correct
15	Correct	265 ms	55180 KB	Output is correct
16	Correct	17 ms	4180 KB	Output is correct
17	Correct	56 ms	12736 KB	Output is correct
18	Correct	68 ms	16988 KB	Output is correct
19	Correct	289 ms	62920 KB	Output is correct
20	Correct	252 ms	50876 KB	Output is correct
21	Correct	150 ms	33804 KB	Output is correct
22	Correct	147 ms	35404 KB	Output is correct
23	Correct	92 ms	26988 KB	Output is correct
24	Correct	392 ms	70876 KB	Output is correct
25	Correct	298 ms	61260 KB	Output is correct
26	Correct	359 ms	66712 KB	Output is correct
27	Correct	370 ms	68944 KB	Output is correct