Factorial equations
Problem
You are given two numbers \(X\) and \(N\). Your task is to find the last digit of the following equation:
\(X^{((N!)\div mod\ 10)}\)
Input format
The first line contains two integers \(X\) and \(N\).
Output format
Print the last digit of the given equation.
Constraints
\(1 \leq X \leq 10^9\\ 0 \leq N \leq 10^{18}\)
Time Limit: 1
Memory Limit: 256
Source Limit:
Explanation
factorial of (2) is 2*1=2 ,So 5^2=25 the last digit in 25 is 5
