/* package whatever; // don't place package name! */

import java.util.*;
import java.util.regex.*;
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
	{
		Matcher m=Pattern.compile("size\\s*=\\s*\"([^\"]*)\"").matcher("size=\"A4\"");
		while(m.find())
			System.out.println(m.group(1));
	}
}