Given a binary tree, find the maximum path sum from root. The path may end at any node in the tree and contain at least one node in it.

The Christmas tree is a wonderful and historic tradition that we don our homes with every Christmas to fill us with spirit and to lay our gifts underneath. However, it is the birth of our Lord and ...

I’m walking in the Eifel Mountains in western Germany, through cathedral-like groves of oak and beech, and there’s a strange unmoored feeling of entering a fairy tale. The trees have become vibrantly ...