homework/666/dog.cpp

#include<iostream>
using namespace std;
 
void myswap(int &i,int &j){
    int x;
    x=i;
    i=j;
    j=x;
    }

int main(){

    int a,b,c;
  
    cin>>a>>b;
   
    myswap(a,b);

    cout<<a<<" "<<b<<endl;

    return 0;
}