#include <iostream>
using namespace std;
 
int greet(){
	cout<<"hello asha";
	return 0;
}
int add(int a ,int b){
	return a+b;
}
int main() {
 
//reference variable 
 
// int x=4;
// int y=x; // copy of x variable (here x and y are independent.)
// y--;
// x++;
// cout<<x<<endl<<y;
int x=7;
int &y=x; // y is reference to x . Its like you gave a second name to x . x and y are now ek jism ek aatma. 
                //that is why there address will also be same.
// x++;
// y++;
// cout<<x<<endl<<y;
// cout<<&x<<endl;   // address of x variable: 0x7ffd868651e4
// cout<<&y<<endl;   //address of y variable: 0x7ffd868651e4
 
// int z=greet(); 
int a ,b;
cin>>a>>b;
int k=add(a,b);
cout<<k;
	return 0;
}

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