#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int n, x = 1000;
  cin >> n;
  int a[n];
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }
  for (int i = 0; i < n; i++) {
    int j = i + 1;
    if (a[j] > a[i]) {
      while (j < n && a[j] >= a[j - 1]) j++;
      if (j != i + 1) {
        int u = x / a[i];
        x %= a[i];
        x += a[j - 1] * u;
        i = j - 1;
      }
    }
  }
  cout << x << endl;
}
