#include <iostream>
#include <string>
using namespace std;
int main() {
string text;
for (int i = 0; i < 3; i++)
{
cin >> text;
text.erase(text.length()/2);
cout << text << endl;
}
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8c3RyaW5nPgoKdXNpbmcgbmFtZXNwYWNlIHN0ZDsKCmludCBtYWluKCkgewoJc3RyaW5nIHRleHQ7Cglmb3IgKGludCBpID0gMDsgaSA8IDM7IGkrKykKCXsKCQljaW4gPj4gdGV4dDsKCQl0ZXh0LmVyYXNlKHRleHQubGVuZ3RoKCkvMik7CgkJY291dCA8PCB0ZXh0IDw8IGVuZGw7Cgl9CglyZXR1cm4gMDsKfQ==