import java.util.Scanner;

public class VariableExchange {
    public static void main(String[] args){
        System.out.println("請輸入變量A的值");
        Scanner scanner=new Scanner(System.in);
        long A=scanner.nextLong();
        System.out.println("請輸入變量B的值");
        Scanner scannerB=new Scanner(System.in);
        long B=scannerB.nextLong();
        System.out.println("A="+A+"/t"+"B="+B);
        System.out.println("執行變量互換...");
        A=A^B;
        B=B^A;
        A=A^B;
        System.out.println("A="+A+"/t"+"B="+B);
    }
}

a = a ^ b;
b = b ^ a;
a = a ^ b;

a1=a^b
b=a1^b=(a^b)^b=a
a=a1^b =a1^(a1^b)=a1^a1^b=b

Scanner sc = new Scanner(System.in);
int i = sc.nextInt();

Scanner sc = new Scanner(new File("myNumbers"));
 while (sc.hasNextLong()) {
       long aLong = sc.nextLong();
}