#include <bits/stdc++.h> // chu so tan cung
using namespace std;
struct td
{
	int a[15],x;
};
td num[15];int a,n;
int main()
{
	num[0].a[1]=0;num[0].x=1;
	num[1].a[1]=1;num[1].x=1;
	num[2].a[1]=2;num[2].a[2]=4,num[2].a[3]=8,num[2].a[4]=6;num[2].x=4;
	num[3].a[1]=3;num[3].a[2]=9;num[3].a[3]=7;num[3].a[4]=1;num[3].x=4;
	num[4].a[1]=4;num[4].a[2]=6;num[4].x=2;
	num[5].a[1]=5;num[5].x=1;
	num[6].a[1]=6;num[6].x=1;
	num[7].a[1]=7;num[7].a[2]=9;num[7].a[3]=3;num[7].a[4]=1;num[7].x=4;
	num[8].a[1]=8;num[8].a[2]=4;num[8].a[3]=2;num[8].a[4]=6;num[8].x=4;
	num[9].a[1]=9;num[9].a[2]=1;num[9].x=2;
	cin>>a>>n;
	cout<<num[a%10].a[n%num[a%10].x];
	return 0;
}
/*
inp: 2 10  || 12 3
out: 4     || 8
vd: 2x2x2x2x2x2x2x2x2x2=1024
    12x12x12=1728
*/

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