/**
*@task: abwords
*@competition: Autumn 2014, Shumen
*@author: Vasil Sarafov
*@time: 23.11.2014, Shumen
**/
#include <iostream>
#include <string>

#define space " "
#define ln "\n"

int n;

int main(int argc, char **argv) {
//	std::ios::sync_with_stdio(false);
//	std::cin.tie(NULL);
	std::cin >> n;
	std::cout << "NO" << ln; //ha-ha
	return 0; 
}
