Added flow problems and a segment tree problem (#622)

Aryamn · web-flow · commit d8749fb8bfd4 · 2020-10-08T20:37:43.000+02:00
diff --git a/src/data_structures/segment_tree.md b/src/data_structures/segment_tree.md
@@ -1148,3 +1148,4 @@ Obviously this idea can be extended in lots of different ways. E.g. by adding su
 * [Codeforces - SUM and REPLACE](https://codeforces.com/problemset/problem/920/F)
 * [COCI - Deda](https://oj.uz/problem/view/COCI17_deda) [Last element smaller or equal to x / Binary search]
 * [Codeforces - The Untended Antiquity](https://codeforces.com/problemset/problem/869/E) [2D]
+* [CSES - Hotel Queries](https://cses.fi/problemset/task/1143)
diff --git a/src/graph/edmonds_karp.md b/src/graph/edmonds_karp.md
@@ -201,3 +201,6 @@ This partition can be easily found using [DFS](./graph/depth-first-search.html)
 ## Practice Problems
 - [Codeforces - Array and Operations](https://codeforces.com/contest/498/problem/c)
 - [Codeforces - Red-Blue Graph](https://codeforces.com/contest/1288/problem/f)
+- [CSES - Download Speed](https://cses.fi/problemset/task/1694)
+- [CSES - Police Chase](https://cses.fi/problemset/task/1695)
+- [CSES - School Dance](https://cses.fi/problemset/task/1696)
