#include <bits/stdc++.h>
#define rep(i, a, n) for(int i = a; i < n; i++)
#define REP(i, n) rep(i, 0, n)
#define repb(i, a, b) for(int i = a; i >= b; i--)
#define all(a) a.begin(), a.end()
#define int unsigned long long
#define chmax(x, y) x = max(x, y)
#define chmin(x, y) x = min(x, y)
using namespace std;
typedef pair<int, int> P;
const int mod = 1000000007;
const int INF = 1e12;

signed main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int N, n;
    cin >> N;
    int sq = sqrt(8 * N + 1);
    bool f = true;
    if(sq * sq != 8 * N + 1){
        f = false;
    }
    if((sq - 1) % 2) f = false;
    n = (sq - 1) / 2;    
    if(f == false) cout << "NO" << endl;
    else cout <<"YES\n" << n << endl;
}