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Submission #527165

# Submission time Handle Problem Language Result Execution time Memory
527165 2022-02-17T03:06:02 Z beepbeepsheep Calvinball championship (CEOI15_teams) C++17
0 / 100
 270 ms 512 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ii pair<ll,ll>
#define endl '\n'
const ll inf=1e15;
const ll mod=1e9+7;
const ll maxn=10005;
ll arr[maxn];
ll nxt[maxn];
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll n;
    cin>>n;
    arr[1]=1;
    for (int i=1;i<=n-1;i++){
        for (int j=1;j<=i;j++){
            nxt[j]+=arr[j]*j;
            nxt[j+1]+=arr[j];
            nxt[j]%=mod;
            nxt[j+1]%=mod;
        }
        swap(arr,nxt);
        memset(nxt,0,sizeof(nxt));
    }
    ll ans=0;
    for (int i=1;i<=n;i++){
        ans+=arr[i];
        ans%=mod;
    }
    cout<<ans;
    return 0;
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 512 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 10 ms 468 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 251 ms 460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 92 ms 460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 270 ms 460 KB Output isn't correct
2 Halted 0 ms 0 KB -