Problem: The only difference between easy and hard versions is constraints.

You are given n segments on the coordinate axis OX. Segments can intersect, lie inside each other and even coincide. The i-th segment is [l_i; r_i] (l_i ≤ r_i) and it covers all integer points j such that l_i ≤ j ≤ r_i.

The integer point is called bad if it is covered by strictly more than k segments.

Your task is to remove the minimum number of segments so that there are no bad points at all.

Input

The first line of the input contains two integers n and k (1 ≤ k ≤ n ≤ 200) — the number of segments and the maximum number of segments by which each integer point can be covered.

The next n lines contain segments. The i-th line contains two integers l_i and r_i (1 ≤ l_i ≤ r_i ≤ 200) — the endpoints of the i-th segment.

Output

In the first line print one integer m (0 ≤ m ≤ n) — the minimum number of segments you need to remove so that there are no bad points.

In the second line print m distinct integers p_1, p_2, ..., p_m (1 ≤ p_i ≤ n) — indices of segments you remove in any order. If there are multiple answers, you can print any of them.

Examples

Input


7 2
11 11
9 11
7 8
8 9
7 8
9 11
7 9


Output


3
1 4 7 


Input


5 1
29 30
30 30
29 29
28 30
30 30


Output


3
1 2 4 


Input


6 1
2 3
3 3
2 3
2 2
2 3
2 3


Output


4
1 3 5 6 

Solution (in CPP):

Solution:
#include <bits/stdc++.h>
using namespace std;
uint64_t gcd(uint64_t a, uint64_t b) {
  uint64_t r;
  while (b != 0) {
    r = a % b;
    a = b;
    b = r;
  }
  return a;
}
int main() {
  std::ios::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int n, k;
  cin >> n >> k;
  vector<pair<int, pair<int, int>>> a(2 * n);
  vector<pair<int, int>> b(n);
  for (int i = 0; i < n; i++) {
    cin >> b[i].first >> b[i].second;
    a[2 * i] = {b[i].first, {i, 1}};
    a[2 * i + 1] = {b[i].second + 1, {i, -1}};
  }
  sort(a.begin(), a.end());
  int curr = 0;
  int p = -1;
  set<pair<int, int>> ends;
  vector<int> res;
  set<int> erased;
  for (int i = 0; i < a.size(); i++) {
    if (a[i].first > p) {
      p = a[i].first;
      while (curr > k) {
        auto it = ends.end();
        it--;
        res.push_back(it->second);
        erased.insert(it->second);
        ends.erase(it);
        curr--;
      }
    }
    if (a[i].second.second == 1) {
      curr += a[i].second.second;
      ends.insert({b[a[i].second.first].second, a[i].second.first});
    }
    if (a[i].second.second == -1 &&
        erased.find(a[i].second.first) == erased.end()) {
      curr += a[i].second.second;
      ends.erase({b[a[i].second.first].second, a[i].second.first});
    }
  }
  cout << res.size() << endl;
  for (int i = 0; i < res.size(); i++) {
    cout << res[i] + 1 << " ";
  }
}