oj.uz

답안 #82882

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
82882 2018-11-02T13:34:18 Z Bodo171 Tents (JOI18_tents) C++14
100 / 100
 169 ms 71448 KB 
#include <iostream>
#include <fstream>
using namespace std;
const long long mod=1000*1000*1000+7;
long long dp[3005][3005];
int h,w;
long long i,j;
int main()
{
   // freopen("data.in","r",stdin);
    cin>>h>>w;
    for(i=0;i<=max(h,w);i++)
        dp[i][0]=dp[0][i]=1;
    for(i=1;i<=h;i++)
    {
        for(j=1;j<=w;j++)
        {
            dp[i][j]+=(1LL*dp[i-1][j])%mod;
            if(j>=2)dp[i][j]+=(1LL*dp[i-1][j-2]*j*(j-1)/2)%mod;
            if(i>=2)dp[i][j]+=(dp[i-2][j-1]*1LL*(i-1)*j)%mod;
            dp[i][j]+=(dp[i-1][j-1]*4*j)%mod;
            dp[i][j]%=mod;
        }
    }
    cout<<(dp[h][w]-1+mod)%mod;
    return 0;
}

Subtask #1
48.0 / 48.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 1152 KB Output is correct
3 Correct 2 ms 1152 KB Output is correct
4 Correct 3 ms 1268 KB Output is correct
5 Correct 3 ms 1664 KB Output is correct
6 Correct 3 ms 1664 KB Output is correct
7 Correct 3 ms 1724 KB Output is correct
8 Correct 3 ms 1724 KB Output is correct
9 Correct 2 ms 1724 KB Output is correct
10 Correct 4 ms 2180 KB Output is correct
11 Correct 3 ms 2180 KB Output is correct
12 Correct 5 ms 2584 KB Output is correct

Subtask #2
52.0 / 52.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 1152 KB Output is correct
3 Correct 2 ms 1152 KB Output is correct
4 Correct 3 ms 1268 KB Output is correct
5 Correct 3 ms 1664 KB Output is correct
6 Correct 3 ms 1664 KB Output is correct
7 Correct 3 ms 1724 KB Output is correct
8 Correct 3 ms 1724 KB Output is correct
9 Correct 2 ms 1724 KB Output is correct
10 Correct 4 ms 2180 KB Output is correct
11 Correct 3 ms 2180 KB Output is correct
12 Correct 5 ms 2584 KB Output is correct
13 Correct 8 ms 8088 KB Output is correct
14 Correct 9 ms 10252 KB Output is correct
15 Correct 119 ms 55648 KB Output is correct
16 Correct 14 ms 55648 KB Output is correct
17 Correct 34 ms 55648 KB Output is correct
18 Correct 37 ms 55648 KB Output is correct
19 Correct 138 ms 63644 KB Output is correct
20 Correct 111 ms 63644 KB Output is correct
21 Correct 84 ms 63644 KB Output is correct
22 Correct 76 ms 63644 KB Output is correct
23 Correct 49 ms 63644 KB Output is correct
24 Correct 168 ms 71448 KB Output is correct
25 Correct 133 ms 71448 KB Output is correct
26 Correct 151 ms 71448 KB Output is correct
27 Correct 169 ms 71448 KB Output is correct