Competitive Programming Exercises

A problem a day! Here is an index of all the problems.

Date	Link	Site	Title
20200730	Day 1	LeetCode	Maximum Subarray	✅	✅
20200731	Day 2	LeetCode	Matrix Block Sum	✅	✅
20200801	Day 3	LeetCode	Plus One	✅	✅
20200802	Day 4	LeetCode	Multiply Strings	✅	✅
20200803	Day 5	LeetCode	House Robber	✅	✅
20200804	Day 6	LeetCode	Count Square Submatrices with All Ones	✅	✅
20200805	Day 7	LeetCode	Minimum Cost Tree From Leaf Values	✅	✅
20200806	Day 8	LeetCode	Counting Bits	✅	✅
20200807	Day 9	LeetCode	Binary Subarrays With Sum	✅	✅
20200808	Day 10	LeetCode	Task Scheduler	✅	✅
20200809	Day 11	LeetCode	Merge Intervals	✅	✅
20200810	Day 12	HackerRank	Meeting Schedules	✅	✅
20200811	Day 13	ICPC Kattis	Ship Traffic	✅	⏳
20200812	Day 14	LeetCode	Count Submatrices With All Ones	✅	⏳
20200813	Day 15	Online Judge	1260 - Sales	✅	✅
20200814	Day 16	HackerRank	Sam and substrings	✅	✅
20200815	Day 17	LeetCode	Max Nesting Depth of 2 VPSs	✅	⏳
20200816	Day 18	LeetCode	The Skyline Problem	⏳	⏳
20200817	Day 19	LeetCode	Search a 2D Matrix II	⏳	✅
20200818	Day 20	LeetCode	Path With Maximum Gold	⏳	⏳
20200819	Day 21	LeetCode	Majority Element	⏳	✅
20200820	Day 22	LeetCode	Recover Binary Search Tree	⏳	⏳
20200821	Day 23	LeetCode	Burst Balloons	⏳	⏳
20200822	Day 24	LeetCode	Binary Tree Cameras	⏳	⏳
20200823	Day 25	LeetCode	K Closest Points to Origin	⏳	✅
20200824	Day 26	LeetCode	Trapping Rain Water	⏳	⏳
20200825	Day 27	LeetCode	Valid Permutations for DI Sequence	⏳	⏳
20200826	Day 28	LeetCode	Trapping Rain Water II	⏳	⏳
20200827	Day 29	LeetCode	Freedom Trail	⏳	⏳
20200828	Day 30	LeetCode	Longest Increasing Path in A Matrix	⏳	✅
20200829	Day 31	LeetCode	Different Ways to Add Parantheses	⏳	⏳
20200830	Day 32	LeetCode	Find K-th Smallest Pair Distance	⏳	⏳
20200831	Day 33	LeetCode	Surrounded Regions	⏳	⏳

Collaborator checklist

• When posing a problem/challenge for the day provide links to problem, online judge/site etc and title, and append ⏳. Try and populate for the problems for the upcoming week in advance. This can very well be a 7 problems a week repository but that is the limit of flexibility - the idea is not to have too much backlog at any time.
• Each day's deliverable is a subdirectory titled titled by the day index (say Day1) and further subdirectories named after collaborators, currently Blastoise and Aditya239 within which their respective codes should rest. After the accepted solution is pushed and task is completed, replace one's ⏳ with ✅