#!/bin/python3

import sys

def initialize(s):
    # This function is called once before all queries.
    length = len(s)
    
    if ((length > 1) and (length < 100000)):
        pass
    
        
def answerQuery(l, r):
    # Return the answer for this query modulo 1000000007.
    substring = s[l:r]
    dic = {} 
    
    if len(substring) is 1:
        return 1
    else:
        for char in substring:
            if char not in dic:
                dic[char] = 1
            else:
                dic[char] = dic[char] + 1
                
        for item in dic:
            if (dic[item] > 1):
                return 2    
    
    
if __name__ == "__main__":
    s = input().strip()
    initialize(s)
    q = int(input().strip())
    for a0 in range(q):
        l, r = input().strip().split(' ')
        l, r = [int(l), int(r)]
        result = answerQuery(l, r)
        print(result)