2016 Multi-University Training Contest 2 1005 hdu 5738 计算几何
链接:戳这里EurekaTimeLimit:8000/4000MS(Java/Others)MemoryLimit:65536/65536K(Java/Others)ProblemDescriptionProfessorZhangdrawsnpointsontheplane,whichareconvenientlylabeledby1,2,...,n.Thei-thpointisat(xi,yi)