Start: Apr, 17, 2017 10:00:00
Python程序设计基础培训第二次作业
End: Apr, 23, 2017 14:00:00
Time elapsed:
Time remaining:
Problem_ID: C
Result: Accepted
Time: 130ms
Memory: 21432kB
Author: 15606823587
In contest: 1086 
n=1
while n!=0:
	n=int(raw_input())
	s=100*0.7**n
	if n!=0 :print '%.2f' % s