#include<stdio.h>
#include<string.h>
#include<algorithm>
using namespace std;
#define ll long long 
ll a[1100000],b[1100000];
ll mi[1100000];
int n;
ll  ans,sum;
int main()
{
    while(scanf("%d",&n)!=EOF)
    {
        sum=0;
        for(int i=1;i<=n;i++)
        scanf("%I64d",&a[i]);
        for(int i=1;i<=n;i++)
        {    
            b[i]=b[i-1]+(1890*a[i]+143)%10007-a[i];
            sum+=a[i];
        }
        ans=sum;
        for(int i=1;i<=n;i++)
        {
            mi[i]=min(mi[i-1],b[i]);
            ans=max(ans,sum+b[i]-mi[i]);
        }
        printf("%I64d\n",ans);
    }
    return 0;
}