Treap (Cartesian Tree) (cp-algorithms.com)

this is non-rotation treap (fhq treap), it is more common among competitive programming folks, for other cs folks, i believe the rotating variant is more popular: https://www.cs.umd.edu/class/spring2022/cmsc420-0101/Lects/l...

A very nice problem solved using treap: https://stackoverflow.com/questions/79751600/solve-cses-moun...