add README.md

Author: ZLBer

README.md

@@ -3,8 +3,7 @@
 
 Record leetcode contest and ideas every week, and encourage yourself to think more
 
-
-* ☀️ [weekly contest 300](src/main/java/weekly/wk300.java) 
+* ☀️ [weekly contest 300](src/main/java/weekly/wk300.java) Hash Table | Simulation | DP | DP
 * ☔ [weekly contest 299](src/main/java/weekly/wk299.java)
 * ☁️ [weekly contest 298](src/main/java/weekly/wk298.java) 
 * ❄️ [weekly contest 297](src/main/java/weekly/wk297.java)