#include<stdio.h>
int main()
{
    int a,b,n;
    scanf("%d %d",&a,&b);

        n=a/b;
        if(n>2)
        {
            printf(":(\nIn this case, there is no way for them to take desired number of pieces, unfortunately.\n");
        }
        else
        {
            printf("Yay!\nBoth of them can take desired number of pieces as follows:  \n");
        }

}
