/* 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
{
{
Scanner sc
=new Scanner
(System.
in); 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]+'@';
}
}
}
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