#include <stdio.h>
int main()
{
    int N, i, n;
    scanf("%d", &N);
    n = N % 3;
    switch(n){
    	case 0:
    		printf("0");
    		break;
    	case 1:
    		printf("2");
    		break;
    	case 2:
    		printf("1");
    }
}