n = int(input())

grid = [ bin(i+1).count("1") for i in range(n) ]
step = [1] + [-1 for i in range(n-1)] 
for i in range(1,n):
    s = 0
    for j in range(n):
        if step[j] == i:
            if j-grid[j] > 0 and step[j-grid[j]] == -1:
                step[j-grid[j]] = i+1
                s = 1
            if j+grid[j] < n and step[j+grid[j]] == -1:
                step[j+grid[j]] = i+1
                s = 1
    if s == 0:
        break
print(step[-1])