Find Last Digit Of a^b for Large Numbers
Submissions: 1918   Accuracy:

22.66%

  Difficulty: Easy   Marks: 2

You are given two integer numbers , the base a (number of digits d, such that 1 <= d <= 1000) and the index b. You have to find the last digit of a^b.

Input:

The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. The first line of each test case contains the numbers a and b.

Output:

Print the last digit of ab. Print the answer for each test case in a new line.


Constraints:

1<= T <=100

1<= a, b <=101000


Example:

Input:

3

3 10

6 2

150 53

Output:

9

6

0

** For More Input/Output Examples Use 'Expected Output' option **

Contributor: Sujnesh Mishra
Author: sujnesh


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