#include <iostream>
using namespace std;
int main() {
char text[100];
cin >> noskipws >> text;
cout << text;
cin >> noskipws >> text;
cout << text;
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSB7CgljaGFyIHRleHRbMTAwXTsKCWNpbiA+PiBub3NraXB3cyA+PiB0ZXh0OwoJY291dCA8PCB0ZXh0OwoJY2luID4+IG5vc2tpcHdzID4+IHRleHQ7Cgljb3V0IDw8IHRleHQ7CglyZXR1cm4gMDsKfQ==