Time Stamp
0:00 Problem 1 - Price Maximization
14:50 Problem 2 - H2. Maximum Crossings (Hard Version)
29:00 Problem 3 - E. Replace With the Previous, Minimize
45:50 Problem 4 - C. Palindrome Basis
Links of Problems
Problem 1 - https://codeforces.com/problemset/problem/1690/E
Problem 2 - https://codeforces.com/problemset/problem/1676/H2
Problem 3 - https://codeforces.com/problemset/problem/1675/E
Problem 4 - https://codeforces.com/problemset/problem/1673/C
