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: 131ms
Memory: 21432kB
Author: 13858097905
In contest: 1086 
n= int(input())
while n:  
		s=100
		for i in range(n):
			s=s*0.7
		print '%.2f' % s
		n= int(input())