D. E. Shaw

Maximum Number of Subsequences After One Inserting

Minimum Number of Taps to Open to Water a Garden

Find Minimum Cost to Remove Array Elements

Maximum Points After Collecting Coins From All Nodes

Minimum Deletions to Make String K-Special

Shortest String That Contains Three Strings

Find the Sum of the Power of All Subsequences

Number of Substrings Containing All Three Characters

Minimize Connected Groups by Inserting Interval

Count the Number of Incremovable Subarrays II

Find the Smallest Divisor Given a Threshold

Using a Robot to Print the Lexicographically Smallest String

Shortest Subarray to be Removed to Make Array Sorted

Minimum Number of Visited Cells in a Grid

Find First and Last Position of Element in Sorted Array

Number of Ways to Wear Different Hats to Each Other

Number of Ways to Reorder Array to Get Same BST

D. E. Shaw Interview Guide