N,K = map(int, input().split())
if (K-4)%6==0:
    print("s")
elif (K-1)%12==0 or K==1:
    print("y")
    
elif (K-7)%12==0 or K == 7:
    print("n")
elif (K-2)%6==0 or (K-3)%6==0:
    print("u")
else:print("a")