for i in range(1,int(raw_input()) + 1):
    if i % 15 == 0:
        print 'FizzBuff'
        break
    if i % 3 == 0:
        print 'Fizz'
        break
    if i % 5 == 0:
        print 'Buff'
        break
    if i % 3 != 0 and i % 3 != 0:
        print i