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：
1 #pragma comment(linker, "/STACK:1024000000,1024000000") 2 #include<iostream> 3 #include<cstdio> 4 #include<cstring> 5 #include<cmath> 6 #include<math.h> 7 #include<algorithm> 8 #include<queue> 9 #include<set> 10 #include<bitset> 11 #include<map> 12 #include<vector> 13 #include<stdlib.h> 14 using namespace std; 15 #define ll long long 16 #define eps 1e-10 17 #define MOD 1000000007 18 #define N 1000000 19 #define inf 1e12 20 int x,y; 21 int main() 22 { 23 int t; 24 scanf("%d",&t); 25 while(t--){ 26 scanf("%d%d",&x,&y); 27 printf("%d ",2*x*y); 28 29 } 30 return 0; 31 }