90 = 44 + 45 = 22 + 23 + 24 + 25 + 26 + 27 + 28 + 29 = 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20 + 21 + 22.
90 = 44 + 45 = 22 + 23 + 24 + 25 + 26 + 27 + 28 + 29 = 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20 + 21 + 22.