摘要：
Jungle OutpostTime limit: 15.000 secondsDescriptionThere is a military base lost deep in the jungle. It is surrounded bynwatchtowers with ultrasonic g... 阅读全文
摘要：
SquaresThe famous Korean IT companyplans to make a digital map of the Earth with help of wireless sensors which spread out in rough terrains. Each ... 阅读全文