Halloween party

https://www.hackerrank.com/challenges/halloween-party

 def main():
     t = int(raw_input())
     for _ in range(t):
         k = int(raw_input())
         if k % 2 == 0:
             k //= 2
             print k * k
         else:
             k //= 2
             print k * (k + 1)

 main()

错误

　　脑子里面对变量的认识还不够明确