Tetris

123456789101112131415161718
Across
  1. 3. Student Council
  2. 6. Lines
  3. 7. Sum of all possible 4-digit numbers
  4. 8. 6-digit numbers
  5. 9. BLACKPINK
  6. 11. Miso
  7. 13. COMMEMORATION
  8. 14. Start-up team
  9. 15. Jipyeong
  10. 17. Balloon
  11. 18. Odd
Down
  1. 1. Non-negative
  2. 2. Juice
  3. 4. Arcade
  4. 5. Namjoon
  5. 6. CHANEL
  6. 7. Taehyung hungry
  7. 10. CHOCOLATE
  8. 12. Royal ball
  9. 15. JEON JEONGGUK
  10. 16. Saeroyi