from math import factorial
c = lambda y, x: factorial(y) // factorial(x) // factorial(y - x)
def solve():
    k = int(input())
    if k <= 250:
        return [1] + [4] * (k - 1)
    for i in range(2, 251):
        for j in range(2, 251 - i):
            if i * j + c(i, 2) == k:
                return [1] * i + [4] * j
            if c(i, 2) == k:
                return [2] * i + [3] * j
    return [0]
v = solve()
print(len(v))
print(*v)