BC96 [NOIP2015]金币
[NOIP2015]金币
https://www.nowcoder.com/practice/8f71f5670e6a45118d24d13868a2da9e?tpId=290&tags=&title=&difficulty=0&judgeStatus=0&rp=0
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)