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-rw-r--r--graph/graph.tex1
1 files changed, 1 insertions, 0 deletions
diff --git a/graph/graph.tex b/graph/graph.tex
index b251278..e9c32c7 100644
--- a/graph/graph.tex
+++ b/graph/graph.tex
@@ -25,6 +25,7 @@
\end{algorithm}
\begin{algorithm}{Binary Lifting}
+ % https://codeforces.com/blog/entry/74847
\begin{methods}
\method{Lift}{constructor}{\abs{V}}
\method{depth}{distance to root of vertex $v$}{1}