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:
/*package whatever //do not write package name here */

import java.io.*;
import java.util.*;
public class GFG {
	public static void main (String[] args) throws IOException{
		BufferedReader br = new BufferedReader(
                              new InputStreamReader(System.in));
		String s=br.readLine();
		int q=Integer.parseInt(br.readLine());
		int dp[]=new int[s.length()];
		int k=0;
		for(int i=1;i<s.length();i++){
            if(s.charAt(i)==s.charAt(i-1)){
                k++;
            }
    		dp[i]=k;
		}
		for(int i=0;i<q;i++){
		    String line = br.readLine(); // to read multiple integers line
            String[] strs = line.trim().split("\\s+");
		    int l=Integer.parseInt(strs[0]);
		    int r=Integer.parseInt(strs[1]);
		    System.out.println(dp[r-1]-dp[l-1]);
		}
	}
}