문제풀이/Sw Expert Academy(소프웨어 익스퍼트 아카데미 )- 2056번 파이썬(python)

T = int(input())

days = {1: 31, 2: 28, 3: 31, 4: 30, 5: 31, 6: 30, 7: 31, 8: 31, 9: 30, 10: 31, 11: 30, 12: 31}
for test_case in range(1, T + 1):
   case = str(input())
   year = case[0:4]
   month = case[4:6]
   day = case[6:8]
   
   answer = ''
   if 0 < int(month) < 13 and 0 < int(day) <= days[int(month)]:
       answer = year + '/' + month + '/' + day
   else:
       answer += '-1'

   print("#" + str(test_case) + " " + answer)