Parity
Dynamic Programming
Binary Search
- 1956A. Nene's Game - 800
- 1915C. Can I Square? - 800
- 1971E. Find the Car - 1500
Sum Array
Games
- 2003B. Turtle and Piggy Are Playing a Game 2 - 800
- 1990A. Submission Bait - 900
- 1956B. Nene and the Card Game - 800
Constructive Algorithms
- 1951A. Dual Trigger - 900
- 1984A. Strainge Splitting - 800
- 1998B. Minimize Equal Sum Subarrays - 800
- 1998A. Find K Distinct Points with Fixed Center - 800
- 1993B. Parity and Sum - 900
Bitmasks
- 1979B. XOR Sequence - 1000
Binary String
Greedy
Math
Graphs
DFS/BFS
Disjoint Set Union
- 1829E. The Lakes - 1100
- 501B. Misha and Changing Handles - 1100
- 1249B1. Books Exchange (easy version) - 1000
- 1620A. Equal or Not Equal - 800
- 2008D. Sakurako’s Hobby - 1100
Strings
- 2003A. Turtle and Good Strings - 800
- 1931A. Recovering a Small String - 800
Pointers
Two Pointers
Pruning
- 2036C. Anya and 1100 - 900
Constructive Algorithms
Only the last element
matters
Implementation
Observation
Puzzle
Others
Too Difficult For Me (Help
Wanted)
- 2036B. Startup - 800
- 1996D. Fun - 1200
Trivial Problems