#D5495. Cyclic GCDs
Cyclic GCDs
Cyclic GCDs
Niwango-kun has \(N\) chickens as his pets. The chickens are identified by numbers \(1\) to \(N\), and the size of the \(i\)-th chicken is a positive integer \(a_i\).
\(N\) chickens decided to take each other's hand (wing) and form some cycles. The way to make cycles is represented by a permutation \(p\) of \(1, \ldots , N\). Chicken \(i\) takes chicken \(p_i\)'s left hand by its right hand. Chickens may take their own hand.
Let us define the cycle containing chicken \(i\) as the set consisting of chickens \(p_i, p_{p_i}, \ldots, p_{\ddots_i} = i\). It can be proven that after each chicken takes some chicken's hand, the \(N\) chickens can be decomposed into cycles.
The beauty \(f(p)\) of a way of forming cycles is defined as the product of the size of the smallest chicken in each cycle. Let \(b_i \ (1 \leq i \leq N)\) be the sum of \(f(p)\) among all possible permutations \(p\) for which \(i\) cycles are formed in the procedure above.
Find the greatest common divisor of \(b_1, b_2, \ldots, b_N\) and print it \({\rm mod} \ 998244353\).
Constraints
- \(1 \leq N \leq 10^5\)
- \(1 \leq a_i \leq 10^9\)
- All numbers given in input are integers
Input
Input is given from Standard Input in the following format:
(N) (a_1) (a_2) (\ldots) (a_N)
Output
Print the answer.
Examples
Input
2 4 3
Output
3
Input
4 2 5 2 5
Output
2
inputFormat
input are integers
Input
Input is given from Standard Input in the following format:
(N) (a_1) (a_2) (\ldots) (a_N)
outputFormat
Output
Print the answer.
Examples
Input
2 4 3
Output
3
Input
4 2 5 2 5
Output
2
样例
4
2 5 2 5
2