#include <bits/stdc++.h>
using namespace std;
int N;
int A[100];
void solve() {
  int i, j, k, l, r, x, y;
  string s;
  cin >> N;
  for (i = 0; i < (N); i++) cin >> A[i];
  signed long long cur = 1000;
  for (i = 0; i < (N); i++) {
    x = N, y = N;
    for (j = i + 1; j < N; j++) {
      if (A[j] > A[i]) x = min(x, j);
      if (A[i] > A[j]) y = min(y, j);
    }
    if (x < y) {
      cur = cur % A[i] + cur / A[i] * A[x];
      i = x;
    }
  }
  cout << cur << endl;
}
int main(int argc, char** argv) {
  string s;
  int i;
  if (argc == 1) ios::sync_with_stdio(false), cin.tie(0);
  for (i = 0; i < (argc - 1); i++) s += argv[i + 1], s += '\n';
  for (i = 0; i < (s.size()); i++) ungetc(s[s.size() - 1 - i], stdin);
  cout.tie(0);
  solve();
  return 0;
}
