“中软国际杯”湖南省第四届大学生程序设计大_高教学会计算机教育专业委员会.mht

试题2 A new system for preventing airplane collisions is installed at the Hengyang airport. The system traces all flying objects within a certain radius of action: airplanes, helicopters, parachutists, etc. It is assumed that objects move in straight lines with constant speeds, and their motions are calculated according to this model. If the distance between two objects becomes equal to or less than some critical value d, the system gives an alarm. You are given coordinates and velocities 有英文的题目，也有中文的题目