auto update README.md

Author: Ja2Hw

README.md

@@ -326,6 +326,7 @@
 |2535. 아시아 정보올림피아드|[링크](./%EB%B0%B1%EC%A4%80/Silver/2535.%E2%80%85%EC%95%84%EC%8B%9C%EC%95%84%E2%80%85%EC%A0%95%EB%B3%B4%EC%98%AC%EB%A6%BC%ED%94%BC%EC%95%84%EB%93%9C/%EC%95%84%EC%8B%9C%EC%95%84%E2%80%85%EC%A0%95%EB%B3%B4%EC%98%AC%EB%A6%BC%ED%94%BC%EC%95%84%EB%93%9C.py)|
 |2579. 계단 오르기|[링크](./%EB%B0%B1%EC%A4%80/Silver/2579.%E2%80%85%EA%B3%84%EB%8B%A8%E2%80%85%EC%98%A4%EB%A5%B4%EA%B8%B0/%EA%B3%84%EB%8B%A8%E2%80%85%EC%98%A4%EB%A5%B4%EA%B8%B0.py)|
 |2606. 바이러스|[링크](./%EB%B0%B1%EC%A4%80/Silver/2606.%E2%80%85%EB%B0%94%EC%9D%B4%EB%9F%AC%EC%8A%A4/%EB%B0%94%EC%9D%B4%EB%9F%AC%EC%8A%A4.py)|
+|2621. 카드게임|[링크](./%EB%B0%B1%EC%A4%80/Silver/2621.%E2%80%85%EC%B9%B4%EB%93%9C%EA%B2%8C%EC%9E%84/%EC%B9%B4%EB%93%9C%EA%B2%8C%EC%9E%84.py)|
 |2630. 색종이 만들기|[링크](./%EB%B0%B1%EC%A4%80/Silver/2630.%E2%80%85%EC%83%89%EC%A2%85%EC%9D%B4%E2%80%85%EB%A7%8C%EB%93%A4%EA%B8%B0/%EC%83%89%EC%A2%85%EC%9D%B4%E2%80%85%EB%A7%8C%EB%93%A4%EA%B8%B0.py)|
 |26595. 전투의 신|[링크](./%EB%B0%B1%EC%A4%80/Silver/26595.%E2%80%85%EC%A0%84%ED%88%AC%EC%9D%98%E2%80%85%EC%8B%A0/README.md)|
 |27162. Yacht Dice|[링크](./%EB%B0%B1%EC%A4%80/Silver/27162.%E2%80%85Yacht%E2%80%85Dice/Yacht%E2%80%85Dice.py)|