The Coder bank of Coderland has decided to start an offer for its account holders. The currency denominations used in Coderland are different than those used generally. There are $N$ currency denominations in Coderland which are given in the form of an array. The offer from the bank is that the account holder which requests the minimum amount greater than the maximum currency denomination available at the bank which cannot be paid to the account holder will be given a gift. Since you are a customer of this bank, you want to win this gift. Print the number which can get you this prize.

Input Format

The first line of input contains the integer $N$ denoting the number of currency denominations.
The second line of input contains $N$ integers separated by spaces denoting the currency denominations available at the bank.

Output Format

Print the number which denotes the value that can help you avail the Gift voucher.

Constraints

$1$ $\le$ $N$ $\le$ $100$

$1$ $\le$ ${D_i}$ $\le$ $10^6$

NOTE: Consider the bank has an infinite supply of each denomination. If no such number exists, output "Fake Offer!" without quotes.