import sys

sys.setrecursionlimit(10 ** 8)

input = sys.stdin.readline


def main():
    N = int(input())
    dp = [float("inf")] * (N + 1)

    dp[1] = 1

    for _ in range(100):
        for i in range(1, N + 1):
            bcount = bin(i).count("1")
            if i + bcount <= N:
                dp[i + bcount] = min(dp[i + bcount], dp[i] + 1)

            if i - bcount >= 0:
                dp[i - bcount] = min(dp[i - bcount], dp[i] + 1)

    if dp[-1] == float("inf"):
        print(-1)
    else:
        print(dp[-1])


    

if __name__ == '__main__':
    main()