#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int> vint;
typedef pair<int,int> pint;
typedef vector<pint> vpint;
#define rep(i,n) for(int i=0;i<(n);i++)
#define reps(i,f,n) for(int i=(f);i<(n);i++)
#define all(v) (v).begin(),(v).end()
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define chmax(a, b) a = (((a)<(b)) ? (b) : (a))
#define chmin(a, b) a = (((a)>(b)) ? (b) : (a))

int main(void){
	string n, m; cin >> n >> m;
	int num = n[n.size() - 1] - '0';
	if(m == "0"){
		printf("1\n");
		return 0;
	}

	int f = m[m.size() - 1] - '0';
	int ff;
	if("0" <= m && m <= "9"){
		ff = m[m.size() - 1] - '0';
	}else{
		ff = (m[m.size() - 2] - '0') * 10 + (m[m.size() - 1] - '0');
	}

	if(num == 0 || num == 1 || num == 5 || num == 6){
		printf("%d\n", num);
	}else if(num == 4){
		if(f % 2 == 0) printf("6\n");
		else printf("4\n");
	}else if(num == 9){
		if(f % 2 == 0) printf("1\n");
		else printf("9\n");
	}else if(num == 2){
		if(ff % 4 == 1) printf("2\n");
		else if(ff % 4 == 2) printf("4\n");
		else if(ff % 4 == 3) printf("8\n");
		else if(ff % 4 == 0) printf("6\n");
	}else if(num == 3){
		if(ff % 4 == 1) printf("3\n");
		else if(ff % 4 == 2) printf("9\n");
		else if(ff % 4 == 3) printf("7\n");
		else if(ff % 4 == 0) printf("1\n");
	}else if(num == 7){
		if(ff % 4 == 1) printf("7\n");
		else if(ff % 4 == 2) printf("9\n");
		else if(ff % 4 == 3) printf("3\n");
		else if(ff % 4 == 0) printf("1\n");
	}else if(num == 8){
		if(ff % 4 == 1) printf("8\n");
		else if(ff % 4 == 2) printf("4\n");
		else if(ff % 4 == 3) printf("2\n");
		else if(ff % 4 == 0) printf("6\n");
	}
	return 0;
}