#include <iostream>
using namespace std;

#define IMPL thatimpl

    #define QUOTEME(x) QUOTEME_1(x)
    #define QUOTEME_1(x) #x
    
    #define INCLUDE_FILE(x) QUOTEME(impl/x/h)

const char result[] = INCLUDE_FILE(IMPL);

int main() {
	cout << result;
	return 0;
}