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Problem Description
Ice cream took a bronze medal in the Beijing match. Liu sir is very very happy. So he buys a cake for them. kiki is a child who likes eating, so the task of cuting cake was given to kiki. kiki is also a mischievous child. She wants to cut the cake in a different way. This is introduced in the figure below.
But there is a difficult problem.which is how to make each preson get equally many cake. kiki is not good at match, so she wants you help her solve this problem.
![null和null](http://acm.hdu.edu.cn/data/images/c100-1004-1.jpg)
But there is a difficult problem.which is how to make each preson get equally many cake. kiki is not good at match, so she wants you help her solve this problem.
Input
Input contains multiple test cases. Each line is a case. Each case contains only one integer R which is the radius. The input is terminated with a R of 0.
Output
For each test case, you should printf two numbers r2 and r1 in a line, accurate up to 3 decimal places, separate them by one space.
Sample Input
10
15
5
25
0
Sample Output
5.774 8.165 8.660 12.247 2.887 4.082 14.434 20.412
#include<stdio.h> #include<math.h> int main() { double R,r1,r2; while (scanf("%lf",&R)==1&&R) { r2=R*sqrt(2.0/3); r1=R*sqrt(1.0/3); printf("%.3lf %.3lf\n",r1,r2); } return 0; }
文章结束给大家分享下程序员的一些笑话语录:
《诺基亚投资手机浏览器UCWEB,资金不详或控股》杯具了,好不容易养大的闺女嫁外国。(心疼是你养的吗?中国创业型公司创业初期哪个从国有银行贷到过钱?)