package main

import (
	"bufio"
	"fmt"
	"os"
	"sort"
	"strconv"
)

var sc = bufio.NewScanner(os.Stdin)
var wr = bufio.NewWriter(os.Stdout)

func out(x ...interface{}) {
	fmt.Fprintln(wr, x...)
}

func getI() int {
	sc.Scan()
	i, e := strconv.Atoi(sc.Text())
	if e != nil {
		panic(e)
	}
	return i
}

func getF() float64 {
	sc.Scan()
	i, e := strconv.ParseFloat(sc.Text(), 64)
	if e != nil {
		panic(e)
	}
	return i
}

func getInts(N int) []int {
	ret := make([]int, N)
	for i := 0; i < N; i++ {
		ret[i] = getI()
	}
	return ret
}

func getS() string {
	sc.Scan()
	return sc.Text()
}

// min, max, asub, absなど基本関数
func max(a, b int) int {
	if a > b {
		return a
	}
	return b
}

func min(a, b int) int {
	if a < b {
		return a
	}
	return b
}

// min for n entry
func nmin(a ...int) int {
	ret := a[0]
	for _, e := range a {
		ret = min(ret, e)
	}
	return ret
}

// max for n entry
func nmax(a ...int) int {
	ret := a[0]
	for _, e := range a {
		ret = max(ret, e)
	}
	return ret
}

func asub(a, b int) int {
	if a > b {
		return a - b
	}
	return b - a
}

func abs(a int) int {
	if a >= 0 {
		return a
	}
	return -a
}

func lowerBound(a []int, x int) int {
	idx := sort.Search(len(a), func(i int) bool {
		return a[i] >= x
	})
	return idx
}

func upperBound(a []int, x int) int {
	idx := sort.Search(len(a), func(i int) bool {
		return a[i] > x
	})
	return idx
}

type team struct {
	s, p, u int
	cnt     int
	idx     int
}

func main() {
	defer wr.Flush()
	sc.Split(bufio.ScanWords)
	sc.Buffer([]byte{}, 1000000)
	// this template is new version.
	// use getI(), getS(), getInts(), getF()
	N, K := getI(), getI()
	t := make([]team, N)
	for i := 0; i < N; i++ {
		t[i] = team{getI(), getI(), getI(), 0, i}
	}
	sort.Slice(t, func(i, j int) bool {
		if t[i].s == t[j].s {
			return t[i].p < t[j].p
		}
		return t[i].s > t[j].s
	})

	p := make([]int, N+1)
	for i := 0; i < N; i++ {
		u := t[i].u
		t[i].cnt = p[u]
		p[u]++
	}

	sort.Slice(t, func(i, j int) bool {
		if t[i].s == t[j].s {
			if t[i].cnt == t[j].cnt {
				return t[i].p < t[j].p
			}
			return t[i].cnt < t[j].cnt
		}
		return t[i].s > t[j].s
	})

	for i := 0; i < K; i++ {
		out(t[i].idx)
	}
}