#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
  int n;
  cin >> n;
  vector<int> a(n);
  for (int i = 0; i < (n); ++i) {
    cin >> a[i];
  }
  int mny = 1000;
  int ans = 1000;
  for (int i = 0; i < (n - 1); ++i) {
    if (a[i] < a[i + 1]) {
      if (mny % a[i] != 0) {
        ans = mny - (mny / a[i]) * a[i];
        mny = ans + (mny / a[i]) * a[i + 1];
      } else {
        mny = (mny / a[i]) * a[i + 1];
      }
    } else if (a[i] > a[i + 1]) {
      if (mny % a[i + 1] != 0) {
        ans = mny - (mny / a[i + 1]) * a[i + 1];
        mny = ans + (mny / a[i + 1]) * a[i + 1];
      } else {
        mny = (mny / a[i + 1]) * a[i + 1];
      }
    }
  }
  cout << mny << endl;
}
