#include <bits/stdc++.h>
using namespace std;
bool cmpDouble(const double& a, const double& b) {
  return std::fabs(a - b) < std::numeric_limits<double>::epsilon();
}
int main() {
  int n, k;
  cin >> n >> k;
  int arr[5001];
  int ans[5001];
  for (int i = 0; i < n; ++i) {
    cin >> arr[i];
    ans[i] = 0;
  }
  map<int, set<int>> seen;
  for (int i = 0; i < k; ++i) {
    ans[i] = i + 1;
    seen[arr[i]].insert(i + 1);
  }
  for (int i = k; i < n; ++i) {
    if (seen[arr[i]].size() >= k) {
      cout << "NO" << endl;
      return 0;
    }
    for (int j = 1; j <= k; ++j) {
      if (seen[arr[i]].find(j) == seen[arr[i]].end()) {
        ans[i] = j;
        seen[arr[i]].insert(j);
        break;
      }
    }
  }
  cout << "YES" << endl;
  for (int i = 0; i < n; ++i) {
    cout << ans[i] << " ";
  }
  cout << endl;
}
