N,K = map(int,input().split())
S1 = "yuusaan"
S2 = "yuusaanuusaa"
K -= 1
n = N-1
length = ((n**2) -n + 1)*len(S2)

if K > length:
    index = K - length
    print(S1[index-1])
else:
    index = K%len(S2)
    print(S2[index])