#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

template<class T>
struct FenwickTree {
  vector<T> dat;

  FenwickTree(int n) : dat(n + 1) {}

  void add(int k, T v) {
    for (k++; k > 0; k &= k - 1) {
      dat[k] += v;
    }
  }

  T sum(int k) {
    T ret = 0;
    for (k++; k < dat.size(); k += k & -k) {
      ret += dat[k];
    }
    return ret;
  }
};

int main() {
  int n, m;
  cin >> n >> m;

  vector<int> p(n);
  vector<int> x(n), a(n), b(n);

  FenwickTree<int> ft1(1e5 + 10);
  FenwickTree<int> ft2(1e5 + 10);

  int two = 0;
  int three = 0;
  for (int i = 0; i < n; i++) {
    p[i] = i;
    scanf("%d %d %d", &x[i], &a[i], &b[i]);
    if (x[i] == 1) ft1.add(b[i], 1);
    if (x[i] == 2) ft2.add(b[i], 1);
    two += x[i] >= 2;
    three += x[i] == 3;
  }

  sort(p.begin(), p.end(), [&](int i, int j) {
    return a[i] > a[j];
  });

  int ans = 1e9;
  int k = 0;
  for (int i = 100001; i >= 0; i--) {
    while (k < n && a[p[k]] >= i) {
      int ii = p[k];
      x[ii]++;
      if (x[ii] == 3) {
        ft2.add(b[ii], -1);
        three++;
      } else if (x[ii] == 2) {
        ft2.add(b[ii], 1);
        ft1.add(b[ii], -1);
        two++;
      } else if (x[ii] == 1) {
        ft1.add(b[ii], 1);
      }
      k++;
    }
    int ok = 0;
    int ng = 1e5 + 2;
    while (ng - ok > 1) {
      int mid = (ok + ng) / 2;
      if (ft1.sum(mid) + two >= m) {
        ok = mid;
      } else {
        ng = mid;
      }
    }
    if (ft1.sum(ok) + two >= m) {
      ans = min(ans, ft2.sum(ok) + three);
    }
  }

  cout << ans << endl;
}