SHAMIM9 - Antik the Numerologist

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Siam Hasan Antik is the great Numerologist in Sylhet International University. One day he wants to work with the last digit of those numbers that are multiplied by 9.

You need to help him.

Input

There are only input N (2 < N < 1040 ).

Output

Print only the last digit of 9×N.

Example

Input:
3

Output:
7
Input:
99

Output:
1


Added by:Ruhul
Date:2019-08-05
Time limit:1s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:C C++ 4.3.2 CPP14 PYTHON3