result=[]
x=int(input())
while x>0:
  l=1
  r=10**9
  while True:
    m=(l+r+1)//2
    if m**2<=x:
      l=m
    else:
      r=m-1
    if l==r:
      break
  result.append(l**2)
  x-=l**2
print(len(result))
print(*result)