# 大きすぎる平方数でない方がいいのか?

S = int(input())

from math import ceil

def nearest_square_num(N):
    upper = ceil(N**0.5)
    for i in range(upper, upper-5, -1):
        if i*i <= N:
            return i
    
S_remainder = S
ans_list = []
while S_remainder > 0:
    calc = nearest_square_num(S_remainder)
    ans_list.append(calc*calc)
    S_remainder -= calc*calc
    
print(len(ans_list))
print(*ans_list)