#include <bits/stdc++.h>
using namespace std;
int dx4[4] = {1, 0, -1, 0};
int dy4[4] = {0, -1, 0, 1};
int dx8[8] = {1, 0, -1, 1, -1, 1, 0, -1};
int dy8[8] = {1, 1, 1, 0, 0, -1, -1, -1};
int dx9[9] = {0, 1, 0, -1, 1, -1, 1, 0, -1};
int dy9[9] = {0, 1, 1, 1, 0, 0, -1, -1, -1};
const int INF = 1e9;
const long long LLINF = 1e18;
const int MAX_V = 1e6 + 1;
const long long mod = 1000000007;
int n;
int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  cin >> n;
  vector<int> a(n);
  for (int i = 0; i < (int)(n); i++) cin >> a[i];
  int s = 0;
  long long mo = 1000;
  for (int i = 0; i < (int)(n); i++) {
    int mi = a[i];
    if (i == n - 1 || a[i] > a[i + 1]) {
      for (int j = (s); j < (int)(i); j++) {
        mi = min(mi, a[j]);
      }
      s = i;
    }
    int t = (mo / mi);
    mo -= (mi * t);
    mo += t * a[i];
  }
  cout << mo << endl;
}
