#include <bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector")
#pragma GCC target("sse,sse2,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
using namespace std;
const int MOD = 1e9 + 7;
const int INF32 = 1 << 30;
const long long INF64 = 1LL << 60;
void solve() {
  int n;
  cin >> n;
  int a[n], m = 1000;
  for (int i = 0; i < n; i++) cin >> a[i];
  for (int i = 0; i < n - 1; i++) {
    if (a[i + 1] > a[i]) m += m / a[i] * (a[i + 1] - a[i]);
  }
  cout << m;
}
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  solve();
  return 0;
}
