Update Nodes_at_distanceK.cpp

angelagarwal2 · angelagarwal2 · commit 7658b9b57297 · 2025-10-03T21:01:32.000+05:30
diff --git a/CPP/data_structures/trees/Trees/Nodes_at_distanceK.cpp b/CPP/data_structures/trees/Trees/Nodes_at_distanceK.cpp
@@ -5,7 +5,7 @@
 #include <stack>
 #include <set>
 #include <queue>
-#include <map>
+#include <unordered_map>
 using namespace std;
 
 /*
