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 PYTHON3):

Solution:
# -*- coding: utf-8 -*-
"""
Created on Wed Nov  7 22:09:43 2018

@author: Quaint Sun
"""

'''
s=input()
m=int(input())

t=0
while t<m:
    l,r=input().split()
    num=0
    for i in range(int(l),int(r)):
        if s[i-1]==s[i]:
            num+=1
    print(num)
    t=t+1
'''

'''
s=input()
n=len(s)
seq=[0]*n
for i in range(1,n):
    if s[i-1]==s[i]:
        seq[i]=seq[i-1]+1
    else:
        seq[i]=seq[i-1]
m=int(input())  
t=0
while t<m:
    l,r=input().split()
    print(seq[int(r)-1]-seq[int(l)-1])
    t=t+1
'''

'''
s=input()
n=len(s)
dp=[0]*(n)
for i in range(1,n):
	dp[i]=dp[i-1]+(s[i]==s[i-1])
m=int(input())
output=[]
for j in range(m):
	a,b=map(int, input().split())
	output.append(dp[b-1]-dp[a-1])	
print("\n".join(map(str,output)))
'''
s=input()
n=len(s)
dp=[0]*(n)
for i in range(1,n):
	dp[i]=dp[i-1]+(s[i]==s[i-1])
m=int(input())
output=[]
t=0
while t<m:
    a,b=map(int, input().split())
    output.append(dp[b-1]-dp[a-1])	
    t=t+1
print("\n".join(map(str,output)))