def bit(x):
    x = bin(x)
    x = x.count('1')
    return x

N = int(input())
A = []
A.append(1)
ans = 1
while True:
    if len(A)!=len(set(A)):
        print(-1)
        break
    if A[-1]!=N:
        if A[-1]+bit(A[-1])<=N:
            A.append(A[-1] + bit(A[-1]))
        else:
            A.append(A[-1] - bit(A[-1]))
        ans+=1
    elif A[-1]==N:
        print(ans)
        break