string s;
    cin >> s;
    int q;
    cin >> q;
    int pre[s.size() + 1];
    memset(pre, 0, sizeof(pre));
    for (int i = 0; i < s.size(); i++)
    {
        if (s[i] == 'a')
        {
            pre[i + 1] = pre[i] + 1;
        }
        else
        {
            pre[i + 1] = pre[i];
        }
    }
    for (int j = 0; j < q; j++)
    {
        int l, r;
        cin >> l >> r;
        if (l == r)
            cout << "0";
        else
            cout << pre[r - 1] - pre[l] + 1 << nl;
    }