import math
def intsqrt(n):
    sqnf=math.sqrt(n)
    dig=math.ceil(math.log10(sqnf))
    sq=0
    for k in reversed(range(0,dig+1)):
        for l in range(0,10):
            sq+=10**k
            if sq*sq==n:
                break
            if sq*sq>n:
                sq-=10**k
                break
    return sq
S=int(input())
ans=[]
while S:
    t=intsqrt(S)
    t*=t
    ans.append(t)
    S-=t
print(len(ans))
print(*ans)