Problems
The first digit of the power
The first digit of the power
You are invited to a very simple task: "What is the first digit of the number $n^n$"?
\InputFile
Consists of several test cases. Each test is located on a separate line and contains one number $n~(1 \le n \le 10^9)$.
\OutputFile
For each test case print in a separate line the first digit of desired result.
Input example #1
3 4
Output example #1
2 2