arc108_f

1 files changed, 2 insertions, 0 deletions

diff --git a/atcoder.md b/atcoder.md
index b2e922c..aad174e 100644
--- a/atcoder.md
+++ b/atcoder.md
@@ -199,3 +199,5 @@
 - ~~arc110_f: Difficult constructive algorithm, do some test cases to find a construction that works~~
 
 - arc105_e: Consider what the graph looks like at the end of the game, then look at parity to see who wins
+
+- arc108_f: First consider the diameter which is pretty obvious, then look at the case where it is colored two different colors; then you only have to consider distances to the two endpoints