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: 124ms
Memory: 21432kB
Author: 13867776566
In contest: 1086 
n=input()
m=100
while n!=0:
	for i in  range(1,n+1):
		m=m*0.7
	print '%.2f' %m
	n=input()
	m=100