from collections import deque
n = int(input())
def solve():
    A = deque([0]*(n+1))
    A[1]=1
    B = deque()
    B.append(1)
    while B:
        a = B.popleft()
        if n == a:
            return A[a]
        bc = bin(a).count("1")
        a1 = a + bc
        a2 = a - bc
        if 0<a1<=n and A[a1]==0:
            B.append(a1)
            A[a1]= A[a] + 1
        if 0<a2<=n and A[a2]==0:
            B.append(a2)
            A[a2]= A[a] + 1
    return -1
print(solve())