Square_Numbers.java

import java.util.*;
public class main{
    public static void main(String[] args) {
       	Scanner input = new Scanner(System.in);
       	int count = 0;
       	String result = "";
       	while(true) {
       		int a = input.nextInt();
       		int b = input.nextInt();
       		if(a == 0 && b == 0)
       			break;
       		
       		for(int i=a;i<=b;i++) {
       			int number = (int)Math.sqrt(i);
       			boolean check = (number * number == i);
       			if(check)
       				count++;
       		}
       		
       		result += count + "\r\n";
       		count = 0;
       	}
       	
       	System.out.print(result);
    }
};