k = int(input()) sum = 0 for i in range(1, 250): for j in range(0, 250): if (1 + i) * i / 2 + j == k and j < i + 1: sum += int((2 * i + 1) * i * (i + 1) / 6) + j * (i + 1) print(sum)
k = int(input()) sum = 0 for i in range(1, 250): for j in range(0, 250): if (1 + i) * i / 2 + j == k and j < i + 1: sum += int((2 * i + 1) * i * (i + 1) / 6) + j * (i + 1) print(sum)