Is Array a Preorder of Some ‌Binary Tree

Make the Prefix Sum Non-negative

Maximal Range That Each Element Is Maximum in It

Maximum Frequency Score of a Subarray

Maximum Length of Semi-Decreasing Subarrays

Maximum Number of Integers to Choose From a Range II

Maximum Profitable Triplets With Increasing Prices I

Maximum Profitable Triplets With Increasing Prices II

Minimum Number of Coins for Fruits II

Minimum Operations to Make Numbers Non-positive

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