import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

	public static void main(String[] args) {
			Scanner in = new Scanner(System.in);
			String S = in.next();
			int start = in.nextInt();
			int end = in.nextInt();

			for(int i=start; i<end; i++){
					System.out.print(S.charAt(i));
			}
	}
}