#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  long long int n, k;
  cin >> n >> k;
  long long int y = 1;
  long long int a[n];
  long long int col[n];
  memset(col, 0, sizeof(col));
  ;
  map<long long int, long long int> mp, colmp;
  for (long long int i = 0; i < n; i++) {
    cin >> a[i];
    if (mp[a[i]] == 0) {
      col[i] = 1;
      colmp[1]++;
    }
    mp[a[i]]++;
  }
  bool pos = true;
  for (long long int i = 0; i < n; i++) {
    bool ok = true;
    long long int y = 1;
    for (long long int j = i + 1; j < n; j++) {
      if (a[j] == a[i] && col[j] == 0) {
        y++;
        if (y <= k) {
          col[j] = y;
          colmp[y]++;
        } else {
          ok = false;
          break;
        }
      }
    }
    if (ok == false) {
      pos = false;
      break;
    }
  }
  if (pos) {
    cout << "YES" << endl;
    long long int c = k;
    for (long long int i = 0; i < n; i++) {
      if (colmp[c] == 0) {
        long long int u = col[i];
        if (colmp[u] >= 2) {
          col[i] = c;
          c--;
          colmp[u]--;
        }
      }
    }
    for (long long int i = 0; i < n; i++) cout << col[i] << " ";
    cout << endl;
  } else
    cout << "NO" << endl;
  return 0;
}
