#include<stdio.h>
int main()
{
	char n[10004], m[10004];
	scanf("%s%s", n, m);
	int ln, lm;
	for (ln = 0; n[ln] != '\0'; ln++);
	for (lm = 0; m[lm] != '\0'; lm++);
	if (lm == 1 && m[0] == '0')
	{
		printf("1\n");
		return 0;
	}
	int nn, mm;
	nn = n[ln - 1] - '0';
	if (lm == 1)
		mm = m[0] - '0';
	else
		mm = 10 * (m[lm - 2] - '0') + (m[lm - 1] - '0');
	int res;
	if (nn == 0)
		res = 0;
	else if (nn == 1)
		res = 1;
	else if (nn == 2)
	{
		if (mm % 4 == 1)res = 2;
		else if (mm % 4 == 2)res = 4;
		else if (mm % 4 == 3)res = 8;
		else res = 6;
	}
	else if (nn == 3)
	{
		if (mm % 4 == 1)res = 3;
		else if (mm % 4 == 2)res = 9;
		else if (mm % 4 == 3)res = 7;
		else res = 1;
	}
	else if (nn == 4)
	{
		if (mm % 2 == 1)res = 4;
		else res = 6;
	}
	else if (nn == 5)
		res = 5;
	else if (nn == 6)
		res = 6;
	else if (nn == 7)
	{
		if (mm % 4 == 1)res = 7;
		else if (mm % 4 == 2)res = 9;
		else if (mm % 4 == 3)res = 3;
		else res = 1;
	}
	else if (nn == 8)
	{
		if (mm % 4 == 1)res = 8;
		else if (mm % 4 == 2)res = 4;
		else if (mm % 4 == 3)res = 2;
		else res = 6;
	}
	else
	{
		if (mm % 2 == 1)res = 9;
		else res = 1;
	}
	printf("%d\n", res);
	return 0;
}