#include<stdio.h>
void swap(int a,int b);
    
void main(int a,int b){
    int temp=a;
    a=b;
    b=temp;
    printf("after swapping:a=%d,b=%d\n",a,b);
}
   int main(){
       int a,b;
       scanf("%d %d",&a,&b);
       swap(a,b);
       printf("swappin:a=%d,b=%\n",a,b);
       return 0;
   }