while True:
    try:
        s = bin(int(input()))[2:]+'E'
        t=[]
        max_num=0
        for i in range(len(s)):
            if s[i]=='1':
                num=0
                for j in range(i,len(s)):
                    if s[j]=='1':
                        num+=1
                    else:
                        if num > max_num:
                            max_num=num
                        break
        print(max_num)
    except:
        break