fix: 优化

lucifer · lucifer · commit 1b5072ebfe37 · 2021-04-10T23:33:15.000+08:00
diff --git a/problems/lcp20.meChtZ.md b/problems/lcp20.meChtZ.md
@@ -75,7 +75,7 @@ https://leetcode-cn.com/problems/meChtZ/
 
 核心代码:
 
-```
+```py
 def dfs(pos):
  if pos === target: return 0
  if pos > target: return float('inf')
diff --git a/problems/lcp21.Za25hA.md b/problems/lcp21.Za25hA.md
@@ -51,7 +51,7 @@ edges 的长度等于图中节点个数
 ## 前置知识
 
 - BFS
-- BFS
+- DFS
 - 图论
 
 ## 公司
