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題目概要：
計算出2對目前比分。s為兩隊比分相加，d為兩隊比分相減。
解題方向：
二元方程式概念下去解即可。
程式碼：
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| //Java | |
| import java.util.Scanner; | |
| class uva10812{ | |
| public static void main(String args[]){ | |
| Scanner sc=new Scanner(System.in); | |
| int cases=sc.nextInt(); | |
| for(int i=0;i<cases;i++){ | |
| long s=sc.nextLong(),d=sc.nextLong(); | |
| long x=s+d,y=s-d; | |
| //Output | |
| if(x<0 || y<0 || (x%2!=0 || y%2!=0)) System.out.println("impossible"); //比數<0 或者 比數不能整除 皆為不可能出現。 | |
| else System.out.println(x/2+" "+y/2); | |
| } | |
| } | |
| } |
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