#include<iostream>
using namespace std;
#include<cstdio>
int main()
{
int a,b;
int * pa=&a;
int * pb=&b;
int * t;
cin>>a>>b;
t=pa;
pa=pb;
pb=t;
cout<<*pa<<*pb;
return 0;
}
#include<iostream>
using namespace std;
#include<cstdio>
int main()
{
int a,b;
int * pa=&a;
int * pb=&b;
int * t;
cin>>a>>b;
t=pa;
pa=pb;
pb=t;
cout<<*pa<<*pb;
return 0;
}