hdu 5605 geometry（几何，数学）

Problem Description

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|.

 

Input

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≤10000.

 

Output

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

 

简单推理，来自官方题解：

 #pragma comment(linker, "/STACK:1024000000,1024000000")
 #include<iostream>
 #include<cstdio>
 #include<cstring>
 #include<cmath>
 #include<math.h>
 #include<algorithm>
 #include<queue>
 #include<set>
 #include<bitset>
 #include<map>
 #include<vector>
 #include<stdlib.h>
 using namespace std;
 #define ll long long
 #define eps 1e-10
 #define MOD 1000000007
 #define N 1000000
 #define inf 1e12
 int x,y;
 int main()
 {
     int t;
     scanf("%d",&t);
     while(t--){
         scanf("%d%d",&x,&y);
         printf("%d\n",*x*y);
 
     }
     return ;
 }