题解 | #按照格式输入并交换输出#

import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String str = in.nextLine();
        String[] strs = str.split(",");
        int a = Integer.parseInt(strs[0].substring(2));
        int b = Integer.parseInt(strs[1].substring(2));
        a = a ^ b;
        b = a ^ b;
        a = a ^ b;
        System.out.println(strs[0].substring(0,1) +"="+ a+","+strs[1].substring(0,1) +"="+ b);
    }
}