#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main()
{
  std::ios_base::sync_with_stdio(false);
  std::cin.tie(nullptr);
  int n;
  cin >> n;
  int l = 0, r = 3001001001;
  while (l + 1 < r) {
    int m = (l + r) / 2;
    if (m * (m + 1) / 2 <= n)
      l = m;
    else
      r = m;
  }
  if (l * (l + 1) / 2 == n) {
    cout << "YES" << endl;
    cout << l << endl;
  }
  else {
    cout << "NO" << endl;
  }
}