#include <bits/stdc++.h>
using namespace std;
const long long mod = 1000000007;
const int inf = 1e9 + 10;
const long long INF = 1e18;
const long double EPS = 1e-10;
const int dx[8] = {1, 0, -1, 0, 1, -1, -1, 1};
const int dy[8] = {0, 1, 0, -1, 1, 1, -1, -1};
template <class T>
bool chmax(T &a, const T &b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template <class T>
bool chmin(T &a, const T &b) {
  if (a > b) {
    a = b;
    return 1;
  }
  return 0;
}
long long dp[105][3];
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout << fixed << setprecision(25);
  long long n;
  cin >> n;
  vector<long long> a(n);
  for (int i = 0; i < (n); ++i) cin >> a[i];
  dp[0][0] = 1000;
  for (int i = 0; i < (n); ++i) {
    for (int j = 0; j < (3); ++j) dp[i + 1][j] = dp[i][j];
    chmax(dp[i + 1][0], dp[i][1] * a[i] + dp[i][2]);
    if (chmax(dp[i + 1][1], dp[i][0] / a[i])) dp[i + 1][2] = dp[i][0] % a[i];
  }
  cout << dp[n][0] << '\n';
  return 0;
}
