import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Sub
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String s = "abcde";
		String t = s.substring(2,4);
		System.out.println(t);
	}
}