a,b=(int(i) for i in input().split())

l=[i for i in range(a,b+1)]

for i in range(len(l)):
    if l[i]%3==0:
        print(l[i])
    else:
        while l[i]!=0:
            if l[i]%10==3:
                print(l[i])
                break
            l[i]=l[i]//10