Codeforces Round 897 (Div. 2) E1. Salyg1n and Array (simple version)
Codeforces Round 895 (Div. 3) G. Replace With Product
Problem C: Two Apples a Day
Problem B: Dim Sum Delivery
Problem A2: Cheeseburger Corollary 2
Problem A1: Cheeseburger Corollary 1
Replace the strings
Scoreboard queries
Alice and candies
Perfect divisors