Problem Statement no such pair can be formed, then print $"$NO Hours".

Note:

No pair can be formed if $N-1$

Input format:

The input consists of the following format:

The first line contains an Integer $N$ denoting the size of the arrar $A.$

The second line contains $N$ space$-$separated integers denoting the demeis d the ana$/A.$ Input will be read from the STDIN by the candidate.

Output Format:

The output consists of the following format:

Print the count modulus $(\%){10}^9+7$ or $"$NO Houss'.

Output will be matched to the candidate's output primted on the stoout.

Constraints:

$1N{10}^5.$

$0A[i]{10}^9.$

Example:

Input:

$4$

$1593030$

Output: