#include<stdio.h>
int main()
{
	long long int m,n;
	scanf("%lld %lld",&m,&n);
	if(n%2==1&&m<0)
	printf("YES\n");
	else printf("NO\n");	
	if(m%2==1||n==0)//判断奇数
	printf("YES");
	else printf("NO");
    return 0;
}
#include<stdio.h>
int main()
{
	long long int m,n;
	scanf("%lld %lld",&m,&n);
	if(n%2==1&&m<0)
	printf("YES\n");
	else printf("NO\n");
	if(m%2==0&&n!=0)//判断偶数
	printf("NO");
	else printf("YES");
    return 0;
}