while 1:
    try:
        n=int(input())
        binary=''
        while n//2 != 0:
            binary += str(n%2)
            n = n//2
        binary = binary+str(n)
        #print(binary)
        bin=binary.replace('0',' ').split()
        #print(bin)
        print(max([len(i) for i in bin]))

    except:
        break