#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int a[100 + 9];
  int taka = 1000, juta = 0;
  for (int i = 0; i < n; i++) cin >> a[i];
  for (int i = 1; i < n; i++) {
    if (a[i] > a[i - 1]) {
      juta = taka / a[i - 1];
      taka -= juta * a[i - 1];
      taka += juta * a[i];
    }
  }
  cout << taka << endl;
  return 0;
}
