合唱队
......\ipch
......\....\合唱队-a3b0743d
......\合唱队
......\合唱队.sdf
......\合唱队.sln
......\合唱队.suo
......\......\合唱队.vcxproj
......\......\合唱队.vcxproj.filters
......\......\合唱队.vcxproj.user
......\......\挑出N-K个人组成两边降序排列.cpp