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