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Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 342721 Accepted Submission(s): 130605

Problem Description

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Input

��ж��飬ÿ��ռһ�У�ÿ�а��һ��ʵ��ʾ��İ뾶��

Output

��Ӧ��ÿ��ݣ��һ�У��λС��

Sample Input

1
1.5

Sample Output

4.189
14.137

Hint

#define PI 3.1415927

Author

lcy

Source

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