Submission #1107701

#	Time	Username	Problem	Language	Result	Execution time	Memory
1107701		12345678	Calvinball championship (CEOI15_teams)	C++17	70 / 100	29 ms	16464 KiB

teams

#include <bits/stdc++.h>

using namespace std;

#define ll long long

const int nx=1e3+5, mod=1e6+7;

ll n, a[nx], h, res, dp[nx][nx];

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n;
    for (int i=1; i<=n; i++) dp[0][i]=1;
    for (int i=1; i<=n; i++) for (int j=1; j<=n; j++) dp[i][j]=(dp[i-1][j]*j+dp[i-1][j+1])%mod;
    for (int i=1; i<=n; i++) 
    {
        cin>>a[i];
        for (int j=1; j<a[i]; j++) res=(res+dp[n-i][h])%mod;
        h=max(h, a[i]);    
    }
    cout<<(res+1)%mod;
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10