5605：geometry

题目描述

There is a point $P$ at coordinate $(x,y)$.
A line goes through the point, and intersects with the postive part of $X,Y$ axes at point $A,B$.
Please calculate the minimum possible value of $|PA|*|PB|$.

输入解释

the first line contains a positive integer T,means the numbers of the test cases.

the next T lines there are two positive integers X,Y,means the coordinates of P.

$T=500$,$0< X,Y\leq 10000$.

输出解释

T lines,each line contains a number,means the answer to each test case.

输入样例

1
2 1

输出样例

4

in the sample $P(2,1)$,we make the line $y=-x+3$,which intersects the positive axis of $X,Y$ at (3,0),(0,3).$|PA|=\sqrt{2},|PB|=2\sqrt{2},|PA|*|PB|=4$,the answer is checked to be the best answer.

来自杭电HDUOJ的附加信息

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该题目是Virtual Judge题目，来自杭电HDUOJ

题目来源 BestCoder Round #68 (div.2)

源链接： HDU-5605

最后修改于 2020-10-25T23:24:08+00:00 由爬虫自动更新

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通过率 --%

时间上限	内存上限
2000/1000MS(Java/Others)	65536/65536K(Java/Others)