def bc(x):
    x = x - ((x >> 1) & 0x5555555555555555)
    x = (x & 0x3333333333333333) + ((x >> 2) & 0x3333333333333333)
    x = (x + (x >> 4)) & 0x0f0f0f0f0f0f0f0f
    x = x + (x >> 8)
    x = x + (x >> 16)
    x = x + (x >> 32)
    return x & 0x0000007f


N = int(input())
INF = float('inf')
dp = [INF]*(N+1)
dp[1] = 1

for i in range(1, N+1):
    c = bc(i)
    if i+c <= N:
        dp[i+c] = min(dp[i+c], dp[i]+1)
    if i-c >= 1:
        dp[i-c] = min(dp[i-c], dp[i]+1)

for i in range(1, N+1):
    c = bc(i)
    if i+c <= N:
        dp[i+c] = min(dp[i+c], dp[i]+1)
    if i-c >= 1:
        dp[i-c] = min(dp[i-c], dp[i]+1)

print(dp[N] if dp[N] < INF else -1)