题目描述

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输入格式

As shown in the PDF.

输出格式

As shown in the PDF

样例

10 11 0.5 

2.761 
3.631 0.000 1.369 
2.703 2.513 1.310 
0.572 3.785 1.172 
-1.625 3.621 1.031

提示

By 秦浩源