#include <bits/stdc++.h>
using namespace std;
char e = '\n';
long long i, j, le;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int t;
  t = 1;
  while (t--) {
    long long n, mx, bot = 0, got;
    cin >> n;
    vector<long long> a(n);
    for (long long i = 0; i < n; i++) cin >> a[i];
    i = 0;
    got = 1000;
    while (i < n - 1) {
      if (a[i + 1] < a[i]) {
        got += bot * a[i];
        bot = 0;
      } else if (a[i + 1] > a[i]) {
        bot = got / a[i];
        got = got % a[i];
      }
      i++;
    }
    if (bot > 0) {
      got += bot * a[n - 1];
    }
    cout << got << e;
  }
  return 0;
}
