S=int(input())

def solve(S):
    ans=[]
    for _ in range(15):
        x=int(S**0.5)
        while (x+1)**2 <= S:
            x+=1
        while x**2 > S:
            x-=1
        ans.append(x**2)
        S-=x**2
        if S==0:break
    if S!=0:return None
    return ans

ans = solve(S)
print(len(ans))
print(*ans)