Links of Problems
Problem 1 - https://codeforces.com/problemset/problem/1554/B
Problem 2 - https://codeforces.com/problemset/problem/1551/D1
Problem 3 - https://codeforces.com/problemset/problem/1550/C
Time Stamp
0:22 Intro
00:22 Problem 1 - B. Cobb
11:36 Problem 2 - D1. Domino (easy version)
23:48 Problem 3 - C. Manhattan Subarrays
