MOD = 10 ** 9 + 7

def main():
    K = int(input())

    fact = [1]
    for i in range(1,300):
        fact.append(fact[-1]*i)
    nck = lambda n,k:fact[n]//fact[n - k]//fact[k]
    
    N = 0
    one = 0
    flag = False
    for i in range(1,250):
        for j in range(250 - i):
            if nck(i,2) + i*j == K:
                N = i + j
                one = i
                flag = True
                break
        if flag:
            break
    
    print(N)
    ans = [1] * one + [2] * (N - one)
    print(*ans)
if __name__ == '__main__':
    main()