a.cpp

#include <stdio.h>

int main()
{
	int n, x;
	
	scanf("%d%d", &n, &x);
	if(n % 6 == 1) {
		if(x == 1) {
			printf("0\n");
		} else
		if(x == 0) {
			printf("1\n");
		} else
		if(x == 2) {
			printf("2\n");
		}
	} else
	if(n % 6 == 2) {
		if(x == 2) {
			printf("0\n");
		} else
		if(x == 0) {
			printf("1\n");
		} else
		if(x == 1) {
			printf("2\n");
		}
	} else
	if(n % 6 == 3) {
		if(x == 2) {
			printf("0\n");
		} else
		if(x == 1) {
			printf("1\n");
		} else
		if(x == 0) {
			printf("2\n");
		}
	} else
	if(n % 6 == 4) {
		if(x == 1) {
			printf("0\n");
		} else
		if(x == 2) {
			printf("1\n");
		} else
		if(x == 0) {
			printf("2\n");
		}
	} else
	if(n % 6 == 5) {
		if(x == 0) {
			printf("0\n");
		} else
		if(x == 2) {
			printf("1\n");
		} else
		if(x == 1) {
			printf("2\n");
		}
	} else
	if(n % 6 == 0) {
		if(x == 0) {
			printf("0\n");
		} else
		if(x == 1) {
			printf("1\n");
		} else
		if(x == 2) {
			printf("2\n");
		}
	}

	return 0;
}