[SW Expert Academy] 증가하는 사탕 수열 (D3)

https://swexpertacademy.com/main/code/problem/problemDetail.do?problemLevel=3&contestProbId=AY4XhKTKU0IDFARM&categoryId=AY4XhKTKU0IDFARM&categoryType=CODE&problemTitle=&orderBy=PASS_RATE&selectCodeLang=ALL&select-1=3&pageSize=10&pageIndex=12

SW Expert Academy

import java.util.Scanner;

class Solution {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int t = sc.nextInt();

		for (int tc = 1; tc <= t; tc++) {
			int arr[] = new int[3];

			boolean isPossible = true;
			int cnt = 0;

			for (int i = 0; i < 3; i++) {
				arr[i] = sc.nextInt();
			}

			for (int i = 2; i >= 1; i--) {

				while (arr[i] <= arr[i - 1]) {
					arr[i - 1] -= 1;

					if (arr[i - 1] == 0) {
						isPossible = false;
						break;
					}

					cnt++;
				}

			}

//			for (int i = 0; i < 3; i++) {
//				System.out.println(arr[i] + " ");
//			}

			if (!isPossible) {
				System.out.println("#" + tc + " " + "-1");
			} else {
				System.out.println("#" + tc + " " + cnt);
			}

		}

	}
}