#include <bits/stdc++.h>
const double PI = 2.0 * acos(0.0);
const double EPS = 1e-9;
using namespace std;
int dr[] = {-1, 0, 1, 0, 1, 1, -1, -1};
int dc[] = {0, 1, 0, -1, -1, 1, -1, 1};
int V, E;
int T;
int N, M, K;
string S;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  cin >> N >> K;
  int ans[5010];
  int i, j;
  map<int, vector<int>> m;
  for (i = 0; i <= N - 1; i++) cin >> j, m[j].push_back(i);
  int col = 0;
  for (auto x : m) {
    if (x.second.size() > K) {
      cout << "NO" << endl;
      return 0;
    } else {
      for (j = 0; j <= x.second.size() - 1; j++) {
        ans[x.second[j]] = col % K + 1;
        col++;
      }
    }
  }
  cout << "YES" << endl;
  for (i = 0; i <= N - 1; i++) cout << ans[i] << ' ';
  cout << endl;
  return 0;
}
