#include <bits/stdc++.h>
using namespace std;
#define int long long   // <-----!!!!!!!!!!!!!!!!!!!

#define rep(i,n) for (int i=0;i<(n);i++)
#define rep2(i,a,b) for (int i=(a);i<(b);i++)
#define rrep(i,n) for (int i=(n)-1;i>=0;i--)
#define rrep2(i,a,b) for (int i=(b)-1;i>=(a);i--)
#define all(a) (a).begin(),(a).end()

typedef long long ll;
typedef pair<int, int> Pii;
typedef tuple<int, int, int> TUPLE;
typedef vector<int> V;
typedef vector<V> VV;
typedef vector<VV> VVV;
typedef vector<vector<int>> Graph;
const int inf = 1e9;
const int mod = 1e9 + 7;

struct Data {
    int id_team, id_univ;
    int ac, ue, pena;
    Data(){}
    Data(int _id_team, int _id_univ, int _ac, int _ue, int _pena)
        : id_team(_id_team), id_univ(_id_univ), ac(_ac), ue(_ue), pena(_pena) {}
    bool operator<(const Data& r) const {
        return ac == r.ac ? (ue == r.ue ? pena < r.pena : ue < r.ue) : ac > r.ac;
    }
    void print() {
        cerr << id_team << " " << id_univ << " " << ac << " " << ue << " " << pena << endl;
    }
};

signed main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(0);

    int N, K;
    cin >> N >> K;
    vector<Data> teams;
    rep(i, N) {
        int s, p, u;
        cin >> s >> p >> u;
        teams.emplace_back(i, u, s, 0, p);
    }
    sort(all(teams));

    int cnt_ue[101000] = {};
    rep(i, N) {
        teams[i].ue = cnt_ue[teams[i].id_univ];
        ++cnt_ue[teams[i].id_univ];
    }
    sort(all(teams));

    rep(i, K) {
        cout << teams[i].id_team << endl;
    }
}