## https://yukicoder.me/problems/no/2358


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

    answer = []
    for z in range(N + 1):

        for p in range(N + 1):
            if (z + p) ** 2 > N + z ** 2:
                break

            o = N + z ** 2
            if z + p == 0:
                continue

            if o % (z + p) == 0:
                zq = o // (z + p)
                x = p
                y = zq - z
                if y >= 0:
                    if x != y:
                        answer.append((x, y, z))
                        answer.append((y, x, z))
                    else:
                        answer.append((x, y, z))
    print(len(answer))
    for x, y, z in answer:
        print(x, y, z)



if __name__ == "__main__":
    main()