d277: 矩形对角线

題目:http://zerojudge.tw/ShowProblem?problemid=d277
程式碼:

import java.util.Scanner;
public class d277 {

 public static void main(String[] args) {
  // TODO Auto-generated method stub
  Scanner sc= new Scanner(System.in);
  while(sc.hasNext()){
   int n = sc.nextInt();//輸入數字
   System.out.println((n%2)==0?n:n-1);
  }
 }

}