Submission #1072997

#	Time	Username	Problem	Language	Result	Execution time	Memory
1072997		DucNguyen2007	Calvinball championship (CEOI15_teams)	C++14	100 / 100	95 ms	604 KiB

teams

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define pii pair<int,int>
#define pll pair<ll,ll>
#define fi first
#define se second
const int maxN=1e4+5,MOD=1000007;
const ll inf=2e18;
int n,a[maxN+1],dp[maxN+1],s[maxN+1];
int main()
{
    //freopen("","r",stdin);
    //freopen("","w",stdout);
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n;
    s[0]=0;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
        s[i]=max(s[i-1],a[i]);
    }
    memset(dp,0,sizeof(dp));
    int ans=0,mx=0;
    for(int i=1;i<=n;i++)
    {
        for(int j=i;j>=2;j--)
        {
            dp[j]=(1LL*dp[j]*j+dp[j-1])%MOD;
        }
        dp[mx]=(dp[mx]+a[i]-1)%MOD;
        mx=max(mx,a[i]);
    }
    for(int i=1;i<=n;i++)
    {
        ans=(ans+dp[i])%MOD;
    }
    cout<<(ans+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: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10