#include <bits/stdc++.h>
using namespace std;
void solve() {
  int n, d, m;
  cin >> n >> m >> d;
  int c[m], sum = 0;
  for (int i = 0; i < m; i++) {
    cin >> c[i];
    sum += c[i];
  }
  d--;
  if (sum + (m + 1) * d >= n) {
    cout << "YES" << endl;
    int k = (d > 0 ? (n - sum) / d : 0), res = (d > 0 ? (n - sum) % d : 0),
        cnt = 0, id = 0;
    bool flag = 1;
    for (int i = 1; i <= n; i++) {
      int j;
      if (cnt == k && res) {
        k++, d = res;
        res = 0;
      }
      if (cnt < k && flag) {
        for (j = i; j < i + d && j <= n; j++) {
          cout << 0 << " ";
        }
        cnt++;
      } else {
        for (j = i; j < i + c[id]; j++) {
          cout << id + 1 << " ";
        }
        id++;
      }
      flag = !flag;
      i = j - 1;
    }
    cout << endl;
  } else
    cout << "NO" << endl;
}
signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int t = 1;
  while (t--) {
    solve();
  }
}
