#include <iostream>
#include <string>
#include <vector>
#include <cstdio>

using namespace std;

vector<int> data_structure(string row)
{
    vector<int> pom;
    char before=row[0];
    //printf("%c\t",before);
    pom.push_back(0);
    int numb_before=0;
    for(int i=1;i<row.size()-1;i++)
    {
	//printf("%c\t",row[i]);
	numb_before = pom[i-1];
	if (row[i] == before)
	{
		  numb_before++;
	}
	pom.push_back(numb_before);
	before = row[i];
    }
    return pom;
}

void print(vector<int> data_struct)
{
    for(int i=0;i<data_struct.size();i++)
    {
	cout<<data_struct[i];
	cout<<"\t";
    }
    cout<<"\n";
}

int main(void)
{
	char row[1000000];
	fgets(row, 1000000, stdin);
	vector<int> radar = data_structure(row);
	int from;
	int to;
	scanf(" ");
	while(!feof(stdin))
	{
	    scanf("%d%d ", &from, &to);
	    int number = radar[to] - radar[from];
	    //printf("from: %d (%d), to: %d (%d), count %d\n",from, radar[from], to, radar[to], number);
	    printf("%d\n", number);
	}
	//print(radar);

	return 0;
}