#include <iostream>
 
#include <stdlib.h>
#include <fstream>
 
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char *argv[]) {
		
 ifstream fin("invers.in");
 ofstream fout("invers.out");
 long int t;
 while(fin>>t)
 {
		fout<<"NU"<<endl;
		}
	return 0;
}