题解 | #按照格式输入并交换输出#

import java.util.Scanner;
import java.util.regex.*;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String src = sc.nextLine();
        Matcher matcher = Pattern.compile("-?\\d+").matcher(src);
        matcher.find();
        int first = Integer.parseInt(matcher.group());
        matcher.find();
        int second = Integer.parseInt(matcher.group());
        first = first ^ second;
        second = first ^ second;
        first = first ^ second;
        sc.close();
        System.out.print("a=" + first + ",b=" + second);
    }
}