【POJ】[1985]Cow Marathon【POJ】[1995]Raising Modulo Numbers【POJ】[2031]Building a Space Station【POJ】[2236]Wireless Network【POJ】[2251]Dungeon Master【POJ】[2349]Arctic Network【POJ】[2367]Genealogical tree【POJ】[2387]Til the Cows Come Home【POJ】[2421]Constructing Roads【POJ】[2456]Aggressive cows«««3233343536»»»