#!python
# -*- coding: utf-8 -*-


def main():
    K = int(input())
    if K < 5:
        1/0

    i = 0
    n = 0
    while n + i + 1 <= K:
        i += 1
        n += i
    s = ('1 ' * n + '5 ' + '8 ' * (K - n))[:-1]
    print((len(s) + 1) // 2)
    print(s)


if __name__ == '__main__':
    main()