import sys
#input = sys.stdin.readline
#input = sys.stdin.buffer.readline #文字列はダメ
#sys.setrecursionlimit(1000000)
#import bisect
#import itertools
#import random
#from heapq import heapify, heappop, heappush
#from collections import defaultdict 
#from collections import deque
#import copy
#import math
#from functools import lru_cache
#@lru_cache(maxsize=None)
#MOD = pow(10,9) + 7
#MOD = 998244353
#dx = [1,0,-1,0]
#dy = [0,1,0,-1]
#dx8 = [1,1,0,-1,-1,-1,0,1]
#dy8 = [0,1,1,1,0,-1,-1,-1]

def f2(x):
    return pow(2,x+1) - 1

def main():
    N = int(input())
    if N == 0:
        return -1
    L = []
    P = 15
    pre = 0
    for i in reversed(range(P)):
        if (N>>i)&1 == pre: continue
        L.append(i)
        pre = pre^1
    #print(L)
    ans = [f2(x) for x in L]
    print(len(ans))
    print(*ans)
    exit()

    v = 0
    for a in ans:
        v ^= a
    print(v)



if __name__ == '__main__':
    main()