#include <bits/stdc++.h>
using namespace std;
int main()
{
    int a,b,xor_;
    cout<<"Enter two numbers to swap"<<endl;
    cin>>a>>b;
    cout<<"Numbers before swap: "<<a<<" "<<b<<endl;
    xor_=a^b;
    a=a^xor_;
    b=b^xor_;
    cout<<"Numbers after swap: "<<a<<" "<<b<<endl;
    return 0;
}
