#include <bits/stdc++.h>
using namespace std;
int main() {
  string s;
  cin >> s;
  long long a, f, sec, t = 0, h = 0;
  cin >> a;
  vector<long long> par;
  vector<long long> m;
  for (int i = 0; i < s.length(); i++) {
    if (s[i - 1] == s[i]) {
      h++;
    }
    par.push_back(h);
  }
  for (int i = 0; i < a; i++) {
    cin >> f >> sec;
    m.push_back(par[sec - 1] - par[f - 1]);
  }
  for (int i = 0; i < a; i++) {
    cout << m[i] << endl;
  }
}
