#include <iostream>

using namespace std;

int main()
{
    int n;
    cin >> n;
    int* arr = new int[n];
    for(int i=0;i<n;i++){
        cin >> arr[i];
    }
    int stocks=0;
    ll total = 1000;
    for(int i=1;i<n;i++){
        if(arr[i]>arr[i-1]){
            total += (arr[i]-arr[i-1])*(total/arr[i-1]);
        }
    }
    cout << total << endl;
    return 0;
}
