if __name__ == '__main__':
    n = int(input().strip())
    if n == 0:
        print("0")
    else:
        a=[]
        while n>0:
            b=n % 2
            a.append(b)
            n= n//2
        a.reverse()
        cout=1
        c=[]
        for i in range(1, len(a)):
            if a[i]==a[i-1] and a[i]==1:
                cout+=1
                if i == len(a)-1:
                    c.append(cout)
            else:
                if a[i]== 1 or a[i-1]:
                    c.append(cout)
                    cout=1
        print(max(c))