/*
	Code by: e16cn-ptit
	Please: take full credit.
*/
#include <iostream>
#include <string>
using namespace std;
 
int main ()
{
	string xau;
	cin>>xau;
	int arr[100005];
	arr[0]=0;
	for (int i=0; i<xau.size()-1; i++)
	{
		if (xau[i]==xau[i+1])
			arr[i+1]=arr[i]+1;
		else
			arr[i+1]=arr[i];
	}
	int m;
	cin>>m;
	for (int i=1; i<=m; i++)
	{
		int l, r;
		cin>>l>>r;
		cout<<arr[r-1]-arr[l-1]<<endl;
	}
	return 0;
}