#include <bits/stdc++.h>

using namespace std;

void initialize(string s) {
    // This function is called once before all queries.
}

int answerQuery(int l, int r ,string s) {
    // Return the answer for this query modulo 1000000007.
    vector <char> c;
    for(int i=0;i<s.length();i++)
    {
        c.push_back(s[i]);
    }
    int count;
    for(int i=0;i<c.size();i++)
    {
        count=0;
        for(int j=0;j<c.size();j++){
            
        
            if(j!=i)
            {
                
                if(c[i]==c[j])
                {
                    count++;
                    if(count==2)
                        return 1;
                }
                
                
            }
            if (count!=2 && count ==1)
                return 2;
        }
    }
    return 1;
}

int main() {
    string s;
    cin >> s;
   // initialize(s);
    int q;
    cin >> q;
    for(int a0 = 0; a0 < q; a0++){
        int l;
        int r;
        cin >> l >> r;
        int result = answerQuery(l, r, s.substr(l-1,r));
        cout << result << endl;
    }
    return 0;
}