from random import choice,randint

a,b=list(map(int,input().split()))

def hash(S):
    ANS=0
    now=1

    for i in range(len(S)):
        ANS=(ANS+ord(S[i])*now)%b
        now*=a
    return ANS

S="a"
h=hash(S)

X="abcdefghijklmnopqrstuvwxyz"
while True:
    T=""

    for i in range(randint(1,100)):
        T+=choice(X)

    if hash(T)==h:
        break

print(S)
print(T)