oj.uz

Submission #996555

# Submission time Handle Problem Language Result Execution time Memory
996555 2024-06-10T19:24:20 Z giorgi_pkhaladze Tents (JOI18_tents) C++14
100 / 100
 71 ms 74332 KB 
#include <bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define ff first
#define ss second
#define pb push_bcak
#define gcd __gcd
using namespace std;
ll n,m,k,i,j,ans,d[3100][3100],mod=1000000007;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
cin>>n>>m;
for(i=0; i<=n; i++){
    for(j=0; j<=m; j++){
        if(i==0 || j==0)d[i][j]=1;
        else{
            d[i][j]=(d[i-1][j]+d[i-1][j-1]*j*4)%mod;
            if(i>1)d[i][j]=(d[i][j]+d[i-2][j-1]*j*i-d[i-2][j-1]*j)%mod;
            if(j>1)d[i][j]=(d[i][j]+d[i-1][j-2]*j*(j-1)/2)%mod;
        }
    }
}
cout<<d[n][m]-1;
    return 0;
}

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 2396 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 2 ms 8540 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 2396 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 2 ms 8540 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 6 ms 57948 KB Output is correct
15 Correct 47 ms 68280 KB Output is correct
16 Correct 5 ms 6492 KB Output is correct
17 Correct 11 ms 19008 KB Output is correct
18 Correct 14 ms 29312 KB Output is correct
19 Correct 54 ms 72276 KB Output is correct
20 Correct 44 ms 59996 KB Output is correct
21 Correct 29 ms 41556 KB Output is correct
22 Correct 29 ms 53844 KB Output is correct
23 Correct 21 ms 74332 KB Output is correct
24 Correct 71 ms 74328 KB Output is correct
25 Correct 54 ms 64080 KB Output is correct
26 Correct 63 ms 70328 KB Output is correct
27 Correct 70 ms 72376 KB Output is correct