답안 #824498

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
824498 2023-08-14T07:02:55 Z kebine Tents (JOI18_tents) C++17
100 / 100
127 ms 141504 KB
#include<bits/stdc++.h>
#define int long long
#define pii pair<int, int>
using namespace std;
const int MOD=1e9+7;
signed main() {
  ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int n, m; cin >> n >> m;
    vector<vector<int>> dp(n+1, vector<int>(m+1));
    vector<vector<int>> pre(n+1, vector<int>(m+1));
    dp[0][0]=1;
    for(int i=1; i<=n; i++) dp[i][0]=1;
    for(int j=1; j<=m; j++) dp[0][j]=1;
    for(int i=1; i<=n; i++) {
      for(int j=1; j<=m; j++) {
          if(i>=2) dp[i][j]=(dp[i][j]+i*(i-1)/2*dp[i-2][j-1])%MOD;
          if(j>=2) dp[i][j]=(dp[i][j]+i*(j-1)*dp[i-1][j-2])%MOD;
          dp[i][j]=(dp[i][j]+4LL*i*dp[i-1][j-1]%MOD)%MOD;
          dp[i][j]=(dp[i][j]+dp[i][j-1])%MOD;
    }
    }
    cout << dp[n][m]-1 << '\n';
    return 0;
}
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 932 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 2 ms 1748 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 932 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 2 ms 1748 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 86 ms 88048 KB Output is correct
16 Correct 5 ms 5972 KB Output is correct
17 Correct 18 ms 19924 KB Output is correct
18 Correct 22 ms 24660 KB Output is correct
19 Correct 93 ms 102580 KB Output is correct
20 Correct 73 ms 82056 KB Output is correct
21 Correct 53 ms 54168 KB Output is correct
22 Correct 51 ms 53444 KB Output is correct
23 Correct 28 ms 29860 KB Output is correct
24 Correct 125 ms 141504 KB Output is correct
25 Correct 102 ms 105016 KB Output is correct
26 Correct 113 ms 120356 KB Output is correct
27 Correct 127 ms 135944 KB Output is correct