[SWEA][D1] 2056. 연월일 달력

import java.util.Scanner;  
  
class Solution  
{  
    public static void main(String args[]) throws Exception  
    {  
  
        Scanner sc = new Scanner(System.in);  
        int T;  
        T=sc.nextInt();  
        sc.nextLine();  
  
        for(int test_case = 1; test_case <= T; test_case++)  
        {  
            String InputDays;  
            String result;  
            InputDays = sc.nextLine();  
  
            if (InputDays.length() != 8){  
                System.out.println("#"+test_case + " -1");  
                continue;  
            }  
  
            String StringYear = InputDays.substring(0,4);  
            String StringMonth = InputDays.substring(4,6);  
            String StringDay = InputDays.substring(6,8);  
  
            int Year = Integer.parseInt(StringYear);  
            int Month = Integer.parseInt(StringMonth);  
            int Day = Integer.parseInt(StringDay);  
  
  
            if( Month < 1 || Month > 12 ){  
                System.out.println("#"+test_case + " -1");  
                continue;  
            }  
  
            int[] maxDays = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };  
            if(Day < 1 || Day > maxDays[Month]){  
                System.out.println("#"+test_case + " -1");  
                continue;  
            }  
  
            System.out.println("#"+test_case + " "+ StringYear + "/"+ StringMonth+ "/" +StringDay);  
        }  
    }  
}