“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 c