import java.io.*;

 import java.util.*;
 
 class CascaronIO {
 	public static void main(String[] args) throws IOException,NumberFormatException {
 		BufferedReader teclado=new BufferedReader(new InputStreamReader(System.in));
 		PrintStream pantalla=System.out;
 		//acá va nuestro programa a partir de esta linea
 
 	}
 }