POJ 1986 Distance Queries

07-24

POJ 1330 Nearest Common Ancestors

07-22

PKU Campus H Magical Balls

05-10

PKU Campus A Investing Your Prize

05-10

PKU Campus D Extracurricular Sports

05-10

PKU Campus G Challenge Your Template

05-10

PKU Campus J Wrong Traversal

05-10

POJ 1979 Red and Black

12-18

POJ 2386 Lake Counting

12-18

POJ 3468 A Simple Problem with Integers

10-18