Please subscribe to the official Codeforces channel in Telegram via the link: https://t.me/codeforces_official.
×

Package for this problem was not updated by the problem writer or Codeforces administration after we’ve upgraded the judging servers. To adjust the time limit constraint, solution execution time will be multiplied by 2. For example, if your solution works for 400 ms on judging servers, then value 800 ms will be displayed and used to determine the verdict.

Virtual contest is a way to take part in past contest, as close as possible to participation on time. It is supported only ACM-ICPC mode for virtual contests.
If you've seen these problems, a virtual contest is not for you - solve these problems in the archive.
If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive.
Never use someone else's code, read the tutorials or communicate with other person during a virtual contest.

No tag edit access

B. Ilya and Queries

time limit per test

2 secondsmemory limit per test

256 megabytesinput

standard inputoutput

standard outputIlya 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* = *s*_{1}*s*_{2}... *s*_{n} (*n* is the length of the string), consisting only of characters "." and "#" and *m* queries. Each query is described by a pair of integers *l*_{i}, *r*_{i} (1 ≤ *l*_{i} < *r*_{i} ≤ *n*). The answer to the query *l*_{i}, *r*_{i} is the number of such integers *i* (*l*_{i} ≤ *i* < *r*_{i}), that *s*_{i} = *s*_{i + 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* ≤ 10^{5}). It is guaranteed that the given string only consists of characters "." and "#".

The next line contains integer *m* (1 ≤ *m* ≤ 10^{5}) — the number of queries. Each of the next *m* lines contains the description of the corresponding query. The *i*-th line contains integers *l*_{i}, *r*_{i} (1 ≤ *l*_{i} < *r*_{i} ≤ *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

Codeforces (c) Copyright 2010-2018 Mike Mirzayanov

The only programming contests Web 2.0 platform

Server time: Dec/10/2018 04:04:04 (f2).

Desktop version, switch to mobile version.

Supported by

User lists

Name |
---|