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:
'''s=input()
m=int(input())
for i in range (m):
    l,r=map(int,input().split())
    q=0
    ma=0
    for j in range(l-1,r-1):
        if s[j]==s[j+1]:
            q+=1
        else:
            if j!= l-1:
                if s[j]!=s[j+1] and s[j]!=s[j-1]:
                    q=0
                elif s[j]!=s[j+1] and s[j]==s[j-1]:
                    q+=1
                    ma=max(ma,q)
                    q=0
                  
    print(q)
        '''
        
s=input()
n=int(input())
l=len(s)
a=[0]*l
ans=''
for i in range(l-1):
	a[i+1]=a[i]+(s[i]==s[i+1])
for i in range(n):
	c,d=map(int,input().split())
	ans+=str(a[d-1]-a[c-1])+'\n'
print(ans)