Problem: Ilya the Lion wants to help all his friends with passing exams. They need to solve the following problem to pass the IT exam.

You've got string s = s1s2... sn (n is the length of the string), consisting only of characters "." and "#" and m queries. Each query is described by a pair of integers li, ri (1 ≤ li < ri ≤ n). The answer to the query li, ri is the number of such integers i (li ≤ i < ri), that si = si + 1.

Ilya the Lion wants to help his friends but is there anyone to help him? Help Ilya, solve the problem.

Input

The first line contains string s of length n (2 ≤ n ≤ 105). It is guaranteed that the given string only consists of characters "." and "#".

The next line contains integer m (1 ≤ m ≤ 105) — the number of queries. Each of the next m lines contains the description of the corresponding query. The i-th line contains integers li, ri (1 ≤ li < ri ≤ n).

Output

Print m integers — the answers to the queries in the order in which they are given in the input.

Examples

Input

......
4
3 4
2 3
1 6
2 6


Output

1
1
5
4


Input

#..###
5
1 3
5 6
1 5
3 6
3 4


Output

1
1
2
2
0

Solution (in JAVA):

Solution:


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.math.BigInteger;
import java.util.Arrays;

public class problemc184 {

    public static void main(String[] args) throws IOException{
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        StringBuffer sb=new StringBuffer();
      String s=br.readLine();
      int arr[]=new int [s.length()] ;
      
      for(int i=1;i<s.length();i++){
          arr[i]=0;
            if(s.charAt(i)==s.charAt(i-1)){
                arr[i] = 1;  
            }
            
                arr[i] += arr[i-1];
            
          
      }
      
      int n=Integer.parseInt(br.readLine());
      for(int i=0;i<n;i++){
          String m[] =br.readLine().split(" ");
          sb.append(arr[Integer.parseInt(m[1])-1] -arr[Integer.parseInt(m[0])-1] +"\n");
      }
    
        System.out.println(sb);
        
        
    }
    
    
    
    
    
    
}