/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String sentenca = "Jais Pereira Guedes Godofredo";
        int index= sentenca.lastIndexOf(" ");
        String restoSentenca = (sentenca.substring(0, index));
        String ultimaPalavra = (sentenca.substring(index+1));
        String novaSentenca = ultimaPalavra + ", " + restoSentenca;
        System.out.println(novaSentenca);
	}
}

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