while True:
    try:
        import re
        i=1
        B=[]
        string=bin(int(input()))
        l=string.count('1')
        for i in range(1,l+1):
            parrten=re.compile(r"1"*i,re.I)
            APP=parrten.findall(string)
            if  len(APP) != 0:
                B.append(i)
        out1=max(B)
        print(out1)
    except:
        break