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

import java.util.*;
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
	{
		// your code goes here
		Scanner sc=new Scanner(System.in);
		String s=sc.next();
		
		int n=s.length();
		
		int prefix[][]=new int[n+1][27];
		
		for(int i=0;i<n;i++)
		{
			int val= s.charAt(i)-'a' ;
			for(int j=0;j<26;j++)
			{
				if(j==val)
				{
					
					prefix[i+1][j]=prefix[i][j]+1;
					
				}
				else
				prefix[i+1][j]=prefix[i][j];
				
			}
		
		}
		
		
		int q=sc.nextInt();
		int ans=0;
		for(int i=0;i<q;i++)
		{
			int l=sc.nextInt();
			int r=sc.nextInt();
			
			
			int val=Math.max(l-1,0);
			for(int j=0;j<=25;j++)
			{
			    int	freq= prefix[r][j]-prefix[val][j];
				ans+=(freq*(freq+1))/2;
			}
		}
		
		System.out.println(ans);
	}
}