10324 Zeros and Ones

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;


class Another {
    public static void main(String[] args) throws IOException {

        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

        int counter = 0;
        String line;
        while ((line = br.readLine()) != null) {
            counter++;

            if (line.equals("")) break;
            String tr = br.readLine();
            int tries = Integer.parseInt(tr);
            System.out.println("Case "+counter+":");
            while (tries-- > 0) {
                String inp = br.readLine();
                String[] arr = inp.split(" ");
                int i = Integer.parseInt(arr[0]);
                int j = Integer.parseInt(arr[1]);
                if (i>j) {
                    int temp = i;
                    i = j;
                    j = temp;
                }

                String sub = line.substring(i,j+1);
                if (sub.contains("0") && sub.contains("1")) {
                    System.out.println("No");
                } else {
                    System.out.println("Yes");
                }
            }

        }
    }
}