#include <bits/stdc++.h>
using namespace std;
int main() {
  int N;
  cin >> N;
  vector<int> A;
  for (int i = 0; i < N; i++) {
    int a;
    cin >> a;
    A.push_back(a);
  }
  int j = 0;
  int M = 1000;
  int S = 0;
  while (j < N) {
    if (A[j] >= A[j + 1]) {
      M += S * A[j];
      S = 0;
    } else {
      S = M / A[j];
      M -= S * A[j];
    }
    j++;
  }
  M += S * A[j];
  cout << M;
}
