B - Moderate Differences
B - Sports Festival
E - Decrease (Judge ver.)
Codeforces Round #824 (Div. 2) D. Meta-set
Educational Codeforces Round 137 (Rated for Div. 2) D. Problem with Random Tests
Codeforces Round #835 (Div. 4) G. SlavicG’s Favorite Problem
2022-2023 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules, Preferably Teams) D. Watch the Videos
Codeforces Round #839 (Div. 3) E. Permutation Game
D - IntegerotS
C - 3 Steps