#include <iostream>
using namespace std;
#define IMPL 3
#define PASTE(y,e) #y e
#define QUOTE(y,e) PASTE(y,e)
#define GLUE(x,y) x##y
#define ADD_FILE(S,E) QUOTE(GLUE(GS_FFT,S),E)
const char result[] = ADD_FILE(IMPL, ".h");
int main() {
cout << result;
return 0;
}
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