// Codeforces Round #186 (Div. 2) B Ilya and Queries
import java.io.*;
import java.math.*;
import java.util.*;
//Codeforces
public class MainCodeforces1 {
private static MyScanner in;
private static PrintStream out;
private static boolean LOCAL_TEST = false;
private static void solve() throws IOException
{
String s = in.nextString();
char[] cs = s.toCharArray();
int N = s.length();
int[] cntFrom1ToX = new int[N + 1];
cntFrom1ToX[1] = 0;
if (cs[0] == cs[1])
cntFrom1ToX[1] = 1;
for (int i = 1; i < N - 1; i++) {
if (cs[i] == cs[i + 1])
cntFrom1ToX[i + 1] = cntFrom1ToX[i] + 1;
else
cntFrom1ToX[i + 1] = cntFrom1ToX[i];
}
int M = in.nextInt();
for (int i = 0; i < M; i++) {
int L = in.nextInt();
int R = in.nextInt();
int cnt = cntFrom1ToX[R - 1] - cntFrom1ToX[L - 1];
out.println(cnt);
}
}
public static void main(String[] args) throws IOException {
// helpers for input/output
out = System.out;
try {
String cname = System.getenv("COMPUTERNAME");
LOCAL_TEST = (cname.equals("ALPHA530"));
} catch (Exception e) {
}
if (LOCAL_TEST) {
in = new MyScanner("E:\\zin.txt");
}
else {
boolean usingFileForIO = false;
if (usingFileForIO) {
// using input.txt and output.txt as I/O
in = new MyScanner("input.txt");
out = new PrintStream("output.txt");
}
else {
in = new MyScanner();
out = System.out;
}
}
solve();
}
// =====================================
static class MyScanner {
Scanner inp = null;
public MyScanner() throws IOException
{
inp = new Scanner(System.in);
}
public MyScanner(String inputFile) throws IOException {
inp = new Scanner(new FileInputStream(inputFile));
}
public int nextInt() throws IOException {
return inp.nextInt();
}
public long nextLong() throws IOException {
return inp.nextLong();
}
public double nextDouble() throws IOException {
return inp.nextDouble();
}
public String nextString() throws IOException {
return inp.next();
}
public String nextLine() throws IOException {
return inp.nextLine();
}
}
}
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