package main

import (
	"fmt"
	"math"
)

func main() {
	var n, m string
	_, _ = fmt.Scan(&n, &m)
	if m == "0" {
		fmt.Println(1)
	} else {
		fmt.Println(int(math.Pow(float64(n[len(n)-1]-'0'), float64((m[len(m)-1]-'0')%4+4))) % 10)
	}
}