Problem: Vasya has an array a_1, a_2, ..., a_n.

You don't know this array, but he told you m facts about this array. The i-th fact is a triple of numbers t_i, l_i and r_i (0 ≤ t_i ≤ 1, 1 ≤ l_i < r_i ≤ n) and it means:

  * if t_i=1 then subbarray a_{l_i}, a_{l_i + 1}, ..., a_{r_i} is sorted in non-decreasing order; 
  * if t_i=0 then subbarray a_{l_i}, a_{l_i + 1}, ..., a_{r_i} is not sorted in non-decreasing order. A subarray is not sorted if there is at least one pair of consecutive elements in this subarray such that the former is greater than the latter. 



For example if a = [2, 1, 1, 3, 2] then he could give you three facts: t_1=1, l_1=2, r_1=4 (the subarray [a_2, a_3, a_4] = [1, 1, 3] is sorted), t_2=0, l_2=4, r_2=5 (the subarray [a_4, a_5] = [3, 2] is not sorted), and t_3=0, l_3=3, r_3=5 (the subarray [a_3, a_5] = [1, 3, 2] is not sorted).

You don't know the array a. Find any array which satisfies all the given facts.

Input

The first line contains two integers n and m (2 ≤ n ≤ 1000, 1 ≤ m ≤ 1000).

Each of the next m lines contains three integers t_i, l_i and r_i (0 ≤ t_i ≤ 1, 1 ≤ l_i < r_i ≤ n).

If t_i = 1 then subbarray a_{l_i}, a_{l_i + 1}, ... , a_{r_i} is sorted. Otherwise (if t_i = 0) subbarray a_{l_i}, a_{l_i + 1}, ... , a_{r_i} is not sorted.

Output

If there is no array that satisfies these facts in only line print NO (in any letter case).

If there is a solution, print YES (in any letter case). In second line print n integers a_1, a_2, ..., a_n (1 ≤ a_i ≤ 10^9) — the array a, satisfying all the given facts. If there are multiple satisfying arrays you can print any of them.

Examples

Input


7 4
1 1 3
1 2 5
0 5 6
1 6 7


Output


YES
1 2 2 3 5 4 4


Input


4 2
1 1 4
0 2 3


Output


NO

Solution (in CPP):

Solution:
#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("O3")
const int mod = (1e9) + 7, mod2 = 998244353;
const long double eps = 1e-20;
const int siz = 2e5 + 5, siz2 = 1e7 + 2, lg = 20, block = 317, block2 = 1000,
          mxv = 5e5;
int n, m, srtd[1005];
vector<int> lr[2][1005], curls;
bool valid[1005];
int main() {
  scanf("%d%d", &n, &m);
  for (int i = 0; i < m; i++) {
    int t, l, r;
    scanf("%d%d%d", &t, &l, &r);
    if (t == 1) {
      srtd[l + 1]++;
      srtd[r + 1]--;
    } else {
      lr[0][l].push_back(i);
      lr[1][r].push_back(i);
    }
  }
  for (int j = 1; j <= n; j++) {
    srtd[j] += srtd[j - 1];
    if (j > 1 && srtd[j] == 0) {
      for (int l : curls) {
        valid[l] = 1;
      }
      curls.clear();
    }
    for (int l : lr[0][j]) {
      curls.push_back(l);
    }
    for (int r : lr[1][j]) {
      if (!valid[r]) {
        printf("no\n");
        return 0;
      }
    }
  }
  printf("yes\n");
  int cur = 1000;
  printf("%d ", cur);
  for (int i = 2; i <= n; i++) {
    if (srtd[i]) {
      cur++;
    } else {
      cur--;
    }
    printf("%d ", cur);
  }
  printf("\n");
  return 0;
}