k = int(input())
a = i = 0
while a+i <= k:
    a += i
    i += 1
k -= a
c = [1]*i
if k >= 2:
    c += [3,3]
    while k >= 2:
        c.append(8)
        k -= 2
if k == 1:
    c += [7,24]
print(len(c))
print(*c[::-1])