Start: Nov, 12, 2017 10:00:00
2017秋Python程序设计基础培训第二次作业
End: Nov, 19, 2017 12:00:00
Time elapsed:
Time remaining:
Problem_ID: C
Result: Accepted
Time: 107ms
Memory: 24436kB
Author: szswzr
In contest: 1122 
n=int(input())
a=[]
while n>0:
    a.append(n)
    n=int(input())
for i in a:
    h="%.2f"%(100*0.7**i)    
    print(h)