#include <bits/stdc++.h>
using namespace std;
int main() {
  int N;
  cin >> N;
  vector<int> A(N);
  for (int i = 0; i < N; ++i) cin >> A[i];
  int amt = 1000;
  for (int i = 0; i < N - 1; ++i)
    if (A[i] < A[i + 1]) amt = amt + (A[i + 1] - A[i]) * (amt / A[i]);
  cout << amt << endl;
  return 0;
}
