#include <iostream>
#include <fstream>
#include<bits/stdc++.h>

using namespace std;

int main() {
    freopen("bros.in", "r", stdin);
    freopen("bros.out", "w", stdout);

    string s;
    cin>>s;
    int cnt=0;
    long long all[1<<17];
    int Cnt[1<<17];
    int CntLeft[1<<17];
    for (int i=0;i<(int)(s.size());i++)
    {
        if (i)CntLeft[i]=CntLeft[i-1];
        if (s[i]=='R')
        {
            cnt++;
        }
        else CntLeft[i]++;

        Cnt[i]=cnt;
        if (i)
            all[i]=all[i-1];
        if (s[i]=='L')
            all[i]+=cnt;
       // cout<<all[i]<<" ";
    }

    int q;
    cin>>q;
    while (q--)
    {
        int left,right;
        cin>>left>>right;
        left--;right--;
        long long minus=0,mul2=0;
        if (left)minus=Cnt[left-1];
        mul2=CntLeft[right];
        if (left)
        mul2-=CntLeft[left-1];
        minus*=mul2;
        if (left)minus+=all[left-1];
        cout<<all[right]-minus<<endl;

    }

    return 0;
}