Solution.java

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;

public class Solution {

  // Complete the squares function below.
  static int squares(int a, int b) {
    return (int)Math.sqrt(b) - (int)Math.ceil(Math.sqrt(a)) + 1;
  }

  private static final Scanner scanner = new Scanner(System.in);

  public static void main(String[] args) throws IOException {
    BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

    int q = scanner.nextInt();
    scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

    for (int qItr = 0; qItr < q; qItr++) {
      String[] ab = scanner.nextLine().split(" ");

      int a = Integer.parseInt(ab[0]);

      int b = Integer.parseInt(ab[1]);

      int result = squares(a, b);

      bufferedWriter.write(String.valueOf(result));
      bufferedWriter.newLine();
    }

    bufferedWriter.close();

    scanner.close();
  }
}