N = raw_input().split()
a = int(N[0])
ua = str(N[0])
b = int(N[1])

while a <= b:
    
    if a%3 == 0:
        print a
    elif ua.find("3") >= 0:
        print a
    a += 1
    N[0] = a
    ua = str(N[0])