from sys import stdin
input=lambda :stdin.readline()[:-1]

S=int(input())
def floor_sqrt(n):
  if n<0:
    return -1
  ng,ok=n+1,-1
  while ng-ok>1:
    mid=(ok+ng)//2
    if mid*mid<=n:
      ok=mid
    else:
      ng=mid
  return ok

ans=[]
while S>0:
  x=floor_sqrt(S)
  ans.append(x*x)
  S-=x*x

print(len(ans))
print(*ans)