#include <bits/stdc++.h>
 
using namespace std;
 
using ll = long long;
 
int main(){
 
    ll n; cin >> n;
    ll arr[n];
    for(ll i = 0; i < n; ++i){
        cin >> arr[i];
    }
    ll ans = 1000, x;
    for(ll i = 1; i < n; ++i){
        if (a[i] > a[i-1]) {
          ans = max(ans, ans / arr[i-1] * arr[i]);
        }
    }
    cout << ans;
    return 0;
}
