金币内置for循环

解题思路:

注意事项:

参考代码:

n = int(input())
sum = 0
coin_per = 0
day = 0
q = 0
while n > q:
   day += 1
   coin_per += 1
   for i in range(day):
       if n == q:
           break
       sum += coin_per
       q += 1
print(sum)