temp.c

#include <stdio.h>
int k;
int main(void){
	int x;
	scanf("%d%d",&k,&x);
	if (judge(x)) 
		printf("YES.\n");
	else
		printf("NO.\n");
	return 0;
}
int judge(int x){
	if (x == k)
		return 1;
        if (x > k){
        	if ((x-1)%3==0 && (x-1)%2==0)
			return(judge((x-1)/2)||judge((x-1)/3));
        	if ((x-1)%3==0)
        		return(judge((x-1)/3));
 		if ((x-1)%2==0)
        		return(judge((x-1)/2));}
	else
		return 0;
}