Help me in solving LJAJAG21 problem

help
,
1

My issue

what is exact ans of this code ?

My code

#include <stdio.h>

int main() {
	// your code goes here
	int a = 12 ,b = 43 ,temp;
	
	
	// swapping with using third variable
      temp = a;
      a = b;
      b = temp;
      printf("%d %d\n", a, b);
      


	//swapping without using third variable 
a = a + b;
b = a - b;
a = a - b;
    
   printf("%d %d\n",b,a); 
    
}

Learning course: Learn C Programming
Problem Link: https://www.codechef.com/learn/course/rcpit-programming-c/RCPITLPC07/problems/LJAJAG21