Hard LeetCode Problems in Python, Part 2

Hard holds 276 problems.

#	Problem	Difficulty	Solution
996	Number of Squareful Arrays	Hard	solution.py
1000	Minimum Cost to Merge Stones	Hard	solution.py
1001	Grid Illumination	Hard	solution.py
1028	Recover a Tree From Preorder Traversal	Hard	solution.py
1074	Number of Submatrices That Sum to Target	Hard	solution.py
1088	Confusing Number II	Hard	solution.py
1092	Shortest Common Supersequence	Hard	solution.py
1095	Find in Mountain Array	Hard	solution.py
1106	Parsing A Boolean Expression	Hard	solution.py
1121	Divide Array Into Increasing Sequences	Hard	solution.py
1168	Optimize Water Distribution in a Village	Hard	solution.py
1183	Maximum Number of Ones	Hard	solution.py
1216	Valid Palindrome III	Hard	solution.py
1220	Count Vowels Permutation	Hard	solution.py
1231	Divide Chocolate	Hard	solution.py
1235	Maximum Profit in Job Scheduling	Hard	solution.py
1246	Palindrome Removal	Hard	solution.py
1255	Maximum Score Words Formed by Letters	Hard	solution.py
1259	Handshakes That Don’t Cross	Hard	solution.py
1269	Number of Ways to Stay in the Same Place After Some Steps	Hard	solution.py
1274	Number of Ships in a Rectangle	Hard	solution.py
1289	Minimum Falling Path Sum II	Hard	solution.py
1335	Minimum Difficulty of a Job Schedule	Hard	solution.py
1359	Count All Valid Pickup and Delivery Options	Hard	solution.py
1383	Maximum Performance of a Team	Hard	solution.py
1406	Stone Game III	Hard	solution.py
1425	Constrained Subsequence Sum	Hard	solution.py
1463	Cherry Pickup II	Hard	solution.py
1489	Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree	Hard	solution.py
1526	Minimum Number of Increments on Subarrays to Form a Target Array	Hard	solution.py
1531	String Compression II	Hard	solution.py
1547	Minimum Cost to Cut a Stick	Hard	solution.py
1553	Minimum Number of Days to Eat N Oranges	Hard	solution.py
1568	Minimum Number of Days to Disconnect Island	Hard	solution.py
1579	Remove Max Number of Edges to Keep Graph Fully Traversable	Hard	solution.py
1611	Minimum One Bit Operations to Make Integers Zero	Hard	solution.py
1639	Number of Ways to Form a Target String Given a Dictionary	Hard	solution.py
1671	Minimum Number of Removals to Make Mountain Array	Hard	solution.py
1675	Minimize Deviation in Array	Hard	solution.py
1793	Maximum Score of a Good Subarray	Hard	solution.py
1799	Maximize Score After N Operations	Hard	solution.py
1851	Minimum Interval to Include Each Query	Hard	solution.py
1857	Largest Color Value in a Directed Graph	Hard	solution.py
1866	Number of Ways to Rearrange Sticks With K Sticks Visible	Hard	solution.py
1944	Number of Visible People in a Queue	Hard	solution.py
1964	Find the Longest Valid Obstacle Course at Each Position	Hard	solution.py
2009	Minimum Number of Operations to Make Array Continuous	Hard	solution.py
2040	Kth Smallest Product of Two Sorted Arrays	Hard	solution.py
2045	Second Minimum Time to Reach Destination	Hard	solution.py
2050	Parallel Courses III	Hard	solution.py
2092	Find All People With Secret	Hard	solution.py
2127	Maximum Employees to Be Invited to a Meeting	Hard	solution.py
2147	Number of Ways to Divide a Long Corridor	Hard	solution.py
2218	Maximum Value of K Coins From Piles	Hard	solution.py
2251	Number of Flowers in Full Bloom	Hard	solution.py
2290	Minimum Obstacle Removal to Reach Corner	Hard	solution.py
2306	Naming a Company	Hard	solution.py
2392	Build a Matrix With Conditions	Hard	solution.py
2402	Meeting Rooms III	Hard	solution.py
2416	Sum of Prefix Scores of Strings	Hard	solution.py
2421	Number of Good Paths	Hard	solution.py
2493	Divide Nodes Into the Maximum Number of Groups	Hard	solution.py
2503	Maximum Number of Points From Grid Queries	Hard	solution.py
2534	Time Taken to Cross the Door	Hard	solution.py
2551	Put Marbles in Bags	Hard	solution.py
2577	Minimum Time to Visit a Cell In a Grid	Hard	solution.py
2709	Greatest Common Divisor Traversal	Hard	solution.py
2742	Painting the Walls	Hard	solution.py
2751	Robot Collisions	Hard	solution.py
2818	Apply Operations to Maximize Score	Hard	solution.py
2872	Maximum Number of K-Divisible Components	Hard	solution.py
2940	Find Building Where Alice and Bob Can Meet	Hard	solution.py
3045	Count Prefix and Suffix Pairs II	Hard	solution.py
3068	Find the Maximum Sum of Node Values	Hard	solution.py
3108	Minimum Cost Walk in Weighted Graph	Hard	solution.py
3203	Find Minimum Diameter After Merging Two Trees	Hard	solution.py

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Hard LeetCode Problems in Python, Part 2