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 counter=0;

        int q = in.nextInt();
        for(int a0 = 0; a0 < q; a0++){
            int l = in.nextInt();
            int r = in.nextInt();
            String sub = s.substring(l,r);

            if(sub.equalsIgnoreCase(new StringBuilder(sub).reverse().toString()))
            {
                counter++;
            }

        }

        System.out.println(counter);


   }

}