/* 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
	{
		Scanner sc=new Scanner(System.in);
		String[] a1=new String[4];
		for(int i=0;i<4;i++)
		{
			a1[i]=sc.next();
		}
		// your code goes here
		for(int i=0;i<a1.length;i++)
		{
			a1[i]=a1[i]+'@';
			System.out.println(a1[i]);
		}
	}
}

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