S=int(input())
A=[]
while S!=0:
    left,right=1,10**9+1
    while right-left>1:
        mid=(right+left)//2
        if mid*mid<=S:
            left=mid
        else:
            right=mid
    S-=left*left
    A.append(left*left)
print(len(A))
print(*A)