class Data:
    def __init__(self, id_team, id_univ, ac, ue, pena):
        self.id_team    =   id_team
        self.id_univ    =   id_univ
        self.ac         =   ac
        self.ue         =   ue
        self.pena       =   pena
    def __lt__(self, other):
        if self.ac != other.ac:  return self.ac > other.ac
        if self.ue != other.ue:  return self.ue < other.ue
        return self.pena < other.pena
    def printMembers(self):
        print(self.id_team, self.id_univ, self.ac, self.ue, self.pena)


N, K = map(int, input().split())
teams = [None] * N
for i in range(N):
    s, p, u = map(int, input().split())
    teams[i] = Data(i, u, s, 0, p)
teams.sort()
# for p in teams:
#     p.printMembers()
# print()

MAX_UNIV = 100001
cnt_ue = [0] * MAX_UNIV
for team in teams:
    team.ue = cnt_ue[team.id_univ]
    cnt_ue[team.id_univ] += 1

teams.sort()
# for p in teams:
#     p.printMembers()
for team in teams[:K]:
    print(team.id_team)