import java.lang.String;
import java.lang.Integer;
import java.lang.Double; 
import java.lang.Boolean;


public class OLOneFile     {

     m2(x) { return x + x; }
	
}

public class OLextendsOneFile extends OLOneFile { } 

public class OLMainOneFile   {

	main(x) { 
		var ol;
		ol = new OLextendsOneFile(); 
		return ol.m2(x); 
	}  
}