Getting sample failed in Google Kick Start 2020 Round A

I was started testing my skills through google kick start and pick a past problem to see how it work and then I get stuck at a point.

Here is My java code for Google Kick Start Round A 2020 Program: Allocation
I have passed all test cases and test it by my own self but when I submit my code to google kick start competition I got Sample Failed:WA
I dont what is Wrong with these problem...Please Help Me Out

Here Is the Description

Problem

There are N houses for sale. The i-th house costs Ai dollars to buy. You have a budget of B dollars to spend.

What is the maximum number of houses you can buy?
Input

The first line of the input gives the number of test cases, T. T test cases follow. Each test case begins with a single line containing the two integers N and B. The second line contains N integers. The i-th integer is Ai, the cost of the i-th house.
Output

For each test case, output one line containing Case #x: y, where x is the test case number (starting from 1) and y is the maximum number of houses you can buy.
Limits

Time limit: 15 seconds per test set.
Memory limit: 1GB.
1 ≤ T ≤ 100.
1 ≤ B ≤ 10^5.
1 ≤ Ai ≤ 1000, for all i.
Test set 1

1 ≤ N ≤ 100.
Test set 2

1 ≤ N ≤ 10^5.
Sample

Input

Output

3
4 100
20 90 40 90
4 50
30 30 10 10
3 300
999 999 999

Case #1: 2
Case #2: 3
Case #3: 0

In Sample Case #1, you have a budget of 100 dollars. You can buy the 1st and 3rd houses for 20 + 40 = 60 dollars.
In Sample Case #2, you have a budget of 50 dollars. You can buy the 1st, 3rd and 4th houses for 30 + 10 + 10 = 50 dollars.
In Sample Case #3, you have a budget of 300 dollars. You cannot buy any houses (so the answer is 0).

Note: Unlike previous editions, in Kick Start 2020, all test sets are visible verdict test sets, meaning you receive instant feedback upon submission.

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.Scanner;

public class Solution {

	public static void main(String[] args) {
		Scanner sc = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
		int testCases = sc.nextInt();
		int n;
		double b;
		int[] a;
		int count;
		for (int i = 1; i <= testCases; i++) {
			n = sc.nextInt();
			a = new int[n];
			b = sc.nextDouble();
			for (int j = 0; j < n; j++) {
				a[j] = sc.nextInt();
			}
			Arrays.sort(a);
			count = 0;

			for (int j = 0; j < n; j++) {
				b = b - a[j];
				if (b < 0) {
					break;
				}
				count++;
			}
			System.out.println(String.format("Case #%d :%d", i, count));
		}

	}

}

In the output, you are supposed to use "Case #%d: %d" and not "Case #%d :%d".
Be carfeul!