#include<bits/stdc++.h>
using namespace std;
#define L long long
L n, t, p, k, i1, i2, i3, i4;
L x[101];
int x1[101][101][2];
int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin >> n >> t >> p >> k;
	int l = t, o[n + 1], id[n + 1], Tm[n + 1];
	for (int i = 1; i <= n; i++) {
		cin >> id[i] >> Tm[i] >> o[i];
		if (o[i] == 1) {
			if (x1[id[i]][Tm[i]][0] == 0) {
				x[id[i]]++;
				if (x[id[i]] == 1)l--;
				x1[id[i]][Tm[i]][0] = 1;
				x1[id[i]][Tm[i]][1] = i;
				if (l == 0 && i4 == 0)i4 = id[i];
			} else continue;
		}
	}
	int k1=0,op[t+1];
	for (int i = 1; i <= t; i++) {
		if(x[i]>=k)op[++k1]=i;
	}
	for (int i = n; i > 0; i--) {
		if (o[i] == 1) {
			if (i1 == 0)i1 = id[i];
			if (x1[id[i]][Tm[i]][1] == i) {
				if (i2 == 0)i2 = id[i];
				bool flag = 0;
    			for (int j = 1; j <= k1; j++) {
					if (op[j] == id[i]) {
						flag = 1;
						break;
					}
				}
				if (flag == 0) {
					i3 = id[i];
					break;
				}
			}
		}
	}
	cout << i1 << ' ' << i2 << ' ' << i3 << ' ' << i4;
	return 0;
}