[백준] 1009번 : 분산처리 - Python(파이썬)

https://www.acmicpc.net/problem/1009

n=int(input())

for i in range(n):
    a,b=map(int,input().split())
    num=1
    for _ in range(b): num=(num*a)%10
    print(10 if(num==0) else num)