Update 9.cpp

manitajay · web-flow · commit 853d77b89351 · 2022-06-03T14:11:00.000+05:30
floyd-warshall algorithm: https://cp-algorithms.com/graph/all-pair-shortest-path-floyd-warshall.html
diff --git a/cses graph/9.cpp b/cses graph/9.cpp
@@ -55,3 +55,4 @@ int main()
     }
     return 0;
 }
+
