update KMP, add border computation

update diameter of tree

add links to union-find

add minkowski sum of convex polygons

update union-find

add search for intermediate fraction using Stern-Brocott tree

fix Tarjan algorithm for SCC

update manacher

update kmp

Add check to stern-brocot search

Create output.cpp

Update stern-brocott.cpp

Create bit.cpp

update dinic

Fixes for Extended GCD/CRT