Unfair Game
Sorting Partition
F - Hammer 2
D - Binary Representations and Queries
G - Security Camera 3
F - Fishing
G - Count Sequences
Codeforces Round #562 (Div. 1) A. Increasing by Modulo
Codeforces Round #565 (Div. 3) E. Cover it!
Codeforces Round #566 (Div. 2) C. Beautiful Lyrics