Add README.md file

Author: actions-user

boj/10999/DivisonOfficer/README.md

@@ -0,0 +1,14 @@
+## Link
+[(문제에 대한 링크) ](https://www.acmicpc.net/problem/10999)
+
+## Topic
+Segment Tree,
+Lazy Update Segment Tree
+
+## Approach
+If in segment tree, update is required for n continued items in a query,
+we can do update feature for log(n) by lazy update.
+## Note
+(남길말) 
+If you first design your segment tree by bottom->top, you may suffered from this subject.
+Design from top -> bottom is much easier.