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>
#pragma GCC optimize("O3")
using namespace std;
mt19937 gen(time(0));
int n, m, x;
vector<int> ans;
map<int, vector<pair<int, int>>> arr;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int x, y;
  cin >> n >> m;
  for (int i = 1; i <= n; i++) {
    cin >> x >> y;
    arr[x].push_back({y, i});
  }
  int now = 0;
  set<pair<int, int>> s;
  for (auto &i : arr) {
    while (!s.empty() && s.begin()->first < i.first) s.erase(s.begin());
    for (auto j : i.second) s.insert(j);
    while (s.size() > m) {
      ans.push_back(prev(s.end())->second);
      s.erase(prev(s.end()));
    }
  }
  cout << ans.size() << '\n';
  for (auto i : ans) cout << i << " ";
  cout << '\n';
  return 0;
}