HDU 5750 Dertouzos

07-24

HDU 2586 How far away ？

07-24

HDU 5067 Harry And Dig Machine

07-23

HDU 5068 Harry And Math Teacher

07-23

HDU 5734 Acperience

07-21

HDU 5744 Keep On Movin

07-21

HDU 5738 Eureka

07-21

HDU 5742 It's All In The Mind

07-21

HDU 5064 Find Sequence

07-20

HDU 5065 Oh! My math home work

07-20