Maximum amount first player can win by picking either the first or last coin

Smallest positive integer that cannot be represented as the sum of a subset of a sorted array

Find the nth sevenish number

Design and implement Connect 4

Reverse a directed graph

Minimum Operations to Make Array Values Equal to K

Minimum Number of Operations to Make Elements in Array Distinct

Lowest Common Ancestor of Deepest Leaves

Maximum Value of an Ordered Triplet II

Maximum Value of an Ordered Triplet I