n = int(input())

if n == 0:
    print(-1)
    exit()


ans = [0]
if n&1:
    ans.append(1)
for i in range(1,50):
    if not n >> i & 1:
        continue

    ans.append(1<<i-1)
    ans.append(1<<i)
ans.append(0)

ans2 = []
for i in range(1,len(ans)-1):
    if ans[i] == ans[i-1] or ans[i] == ans[i+1]:
        continue
    ans2.append(ans[i])
print(len(ans2))
print(*ans2)