九度 1206

 

#include <cstdio>
#include <iostream>
using namespace std;

#ifdef ONLINE_JUDGE                                   
#define FINPUT(file)  0
#define FOUTPUT(file) 0
#else                                                
#define FINPUT(file)  freopen(file,"r",stdin)
#define FOUTPUT(file) freopen(file,"w",stdout)
#endif


int main()
{
    FINPUT("in.txt");
    FOUTPUT("out.txt");
    
    string s1,s2;
    while(cin>>s1>>s2)
    {
		cout<<s1+s2<<endl;
    }
    return 0;
}