diff --git a/tgyuuAn/README.md b/tgyuuAn/README.md
index 5fd3dcb3..bf65daa1 100644
--- a/tgyuuAn/README.md
+++ b/tgyuuAn/README.md
@@ -29,22 +29,23 @@
 | 25차시 | 2023.12.26 |  구현  | <a href="https://school.programmers.co.kr/learn/courses/30/lessons/49190#">방의 개수</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/90
 | 26차시 | 2023.12.29 |  BFS  | <a href="https://www.acmicpc.net/problem/3197">백조의 호수</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/95
 | 27차시 | 2024.01.01 |  BFS  | <a href="https://www.acmicpc.net/problem/9376">탈옥</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/96
-| 28차시 | 2023.01.04 |  스택  | <a href="https://www.acmicpc.net/problem/6549">히스토그램에서 가장 큰 직사각형</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/99
-| 29차시 | 2023.01.07 |  그리디  | <a href="https://www.acmicpc.net/problem/1083">소트</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/103
-| 30차시 | 2023.01.10 |  BFS  | <a href="https://school.programmers.co.kr/learn/courses/30/lessons/87694#">아이템 줍기</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/104
-| 31차시 | 2023.01.13 |  DP  | <a href="https://www.acmicpc.net/problem/17485">진우의 달 여행 (Large)</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/105
-| 32차시 | 2023.01.16 |  그리디  | <a href="https://www.acmicpc.net/problem/1700">멀티탭 스케줄링</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/108
-| 33차시 | 2023.01.19 |  이분 탐색  | <a href="https://www.acmicpc.net/problem/1981">배열에서 이동</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/115
-| 34차시 | 2023.01.22 |  힙  | <a href="https://www.acmicpc.net/problem/1655">가운데를 말해요</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/116
-| 35차시 | 2023.01.25 |  이분 탐색  | <a href="https://www.acmicpc.net/problem/2110">공유기 설치</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/120
-| 36차시 | 2023.02.04 |  BFS  | <a href="https://www.acmicpc.net/problem/4991">로봇 청소기</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/126
-| 37차시 | 2023.02.04 |  BFS  | <a href="https://www.acmicpc.net/problem/1039">교환</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/131
-| 38차시 | 2023.02.15 |  DP  | <a href="https://www.acmicpc.net/problem/2749">피보나치 수 3</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/138
-| 39차시 | 2023.02.18 |  DP  | <a href="https://www.acmicpc.net/problem/7579">앱</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/139
-| 40차시 | 2023.02.21 |  DP  | <a href="https://www.acmicpc.net/problem/31413">입대</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/142
-| 41차시 | 2023.03.04 |  DP  | <a href="https://www.acmicpc.net/problem/2240">자두나무</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/148
-| 42차시 | 2023.03.07 |  DFS  | <a href="https://www.acmicpc.net/problem/2239">스도쿠</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/152
+| 28차시 | 2024.01.04 |  스택  | <a href="https://www.acmicpc.net/problem/6549">히스토그램에서 가장 큰 직사각형</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/99
+| 29차시 | 2024.01.07 |  그리디  | <a href="https://www.acmicpc.net/problem/1083">소트</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/103
+| 30차시 | 2024.01.10 |  BFS  | <a href="https://school.programmers.co.kr/learn/courses/30/lessons/87694#">아이템 줍기</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/104
+| 31차시 | 2024.01.13 |  DP  | <a href="https://www.acmicpc.net/problem/17485">진우의 달 여행 (Large)</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/105
+| 32차시 | 2024.01.16 |  그리디  | <a href="https://www.acmicpc.net/problem/1700">멀티탭 스케줄링</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/108
+| 33차시 | 2024.01.19 |  이분 탐색  | <a href="https://www.acmicpc.net/problem/1981">배열에서 이동</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/115
+| 34차시 | 2024.01.22 |  힙  | <a href="https://www.acmicpc.net/problem/1655">가운데를 말해요</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/116
+| 35차시 | 2024.01.25 |  이분 탐색  | <a href="https://www.acmicpc.net/problem/2110">공유기 설치</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/120
+| 36차시 | 2024.02.04 |  BFS  | <a href="https://www.acmicpc.net/problem/4991">로봇 청소기</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/126
+| 37차시 | 2024.02.04 |  BFS  | <a href="https://www.acmicpc.net/problem/1039">교환</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/131
+| 38차시 | 2024.02.15 |  DP  | <a href="https://www.acmicpc.net/problem/2749">피보나치 수 3</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/138
+| 39차시 | 2024.02.18 |  DP  | <a href="https://www.acmicpc.net/problem/7579">앱</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/139
+| 40차시 | 2024.02.21 |  DP  | <a href="https://www.acmicpc.net/problem/31413">입대</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/142
+| 41차시 | 2024.03.04 |  DP  | <a href="https://www.acmicpc.net/problem/2240">자두나무</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/148
+| 42차시 | 2024.03.07 |  DFS  | <a href="https://www.acmicpc.net/problem/2239">스도쿠</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/152
 | 43차시 | 2024.03.10 |  이분 탐색  | <a href="https://school.programmers.co.kr/learn/courses/30/lessons/64062">징검다리 건너기</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/157
-| 44차시 | 2023.03.13 |  트라이  | <a href="https://www.acmicpc.net/problem/14725">개미굴</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/159
-| 45차시 | 2023.03.16 |  트라이  | <a href="https://www.acmicpc.net/problem/31413">트라이</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/162
+| 44차시 | 2024.03.13 |  트라이  | <a href="https://www.acmicpc.net/problem/14725">개미굴</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/159
+| 45차시 | 2024.03.16 |  트라이  | <a href="https://www.acmicpc.net/problem/31413">트라이</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/162
+| 50차시 | 2024.04.01 |  BFS  | <a href="https://www.acmicpc.net/problem/9328">열쇠</a> | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/175
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