N = int(input())

visited = [0] * N
def bfs(visited, now, ans):
        if now == (N - 1):
                return ans
        if sum(visited) == N:
                return -1
        visited[now] = 1
        tmp = bin(now + 1)
        count = 0
        for i in tmp:
                if i == '1':
                        count += 1
        if now + count < N and visited[now + count] == 0:
                return bfs(visited, now + count, ans + 1)
        if 0 < now - count  and visited[now - count] == 0:
                return bfs(visited, now - count, ans + 1)
        return -1

print(bfs(visited, 0, 1))