Links of Problems
Problem 1 - https://codeforces.com/problemset/problem/1562/C
Problem 2 - https://codeforces.com/problemset/problem/1553/D
Problem 3 - https://codeforces.com/problemset/problem/1552/B
Time Stamp
0:00 Problem 1 - C Rings
16:39 Problem 2 - D Backspace
28:52 Problem 3 - B Running for Gold