Reference PersistentSimpleSegmentTree #120
Description
PersistentSimpleSegmentTree - Tourist Implementation
Problems:
- https://codeforces.com/contest/1771/problem/F
- https://codeforces.com/contest/484/problem/E
- https://codeforces.com/contest/786/problem/C
- https://codeforces.com/contest/786/problem/B
- https://codeforces.com/contest/1208/problem/D
- https://codeforces.com/contest/52/problem/C
- https://codeforces.com/contest/380/problem/C