#include <bits/stdc++.h>
using namespace std;
long long mypow(long long x, long long y) {
  long long result = 1;
  while (y != 0) {
    if (y % 2 != 0) {
      result *= x;
      y -= 1;
    }
    x *= x;
    y /= 2;
  }
  return result;
}
int main(void) {
  int n;
  cin >> n;
  int a[n];
  vector<pair<int, int>> v;
  int x;
  int y = -1;
  for (int i = 0; i < n; i++) {
    cin >> a[i];
    if (i == 0) {
      x = a[i];
    } else {
      if (i == n - 1) {
        if (y != -1 && x < y) v.push_back(make_pair(x, y));
      } else {
        if (a[i - 1] > a[i]) {
          if (y != -1) {
            v.push_back(make_pair(x, y));
            y = -1;
          }
          x = a[i];
        } else {
          y = a[i];
        }
      }
    }
  }
  long long money = 1000;
  for (auto e : v) {
    long long tmp = money / (long long)e.first;
    money = money - tmp * (long long)e.first + tmp * (long long)e.second;
  }
  cout << money << endl;
  return 0;
}
