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 PYTHON):

Solution:
__author__ = 'Devesh Bajpai'

'''
https://codeforces.com/problemset/problem/313/B

Solution: We keep an increasing dp array which tracks the count of s_i = s_i+1 condition met
so far. So its an increasing array. For a given range of [L,R), we calculate the answer as
dp[R] - dp[L]. Since the query ranges are given 1-indexed, we need to subtract one from them
to query from the dp array.  
'''


def solve(s, ranges):

    n = len(s)
    dp = [0] * n

    curr_len = 0
    for i in xrange(1, n):
        if s[i] == s[i-1]:
            curr_len += 1
        dp[i] = curr_len

    results = list()
    for range in ranges:
        results.append(dp[range[1]-1] - dp[range[0]-1])

    return "\n".join(str(_) for _ in results)


if __name__ == "__main__":

    s = raw_input()
    m = int(raw_input())

    ranges = list()
    for _ in xrange(0, m):

        range = map(int, raw_input().split(" "))
        ranges.append(range)

    print solve(s, ranges)