#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int (i)=(0);(i)<(int)(n);++(i))
using ll = long long;
using P = pair<int, int>;
using namespace std;

template<class T> void vin(vector<T>& v, int n) {
    v.resize(n);
    for (int i = 0; i < n; ++i) {
        cin >> v[i];
    }
}

// n(n+1)/2
int main() {
    ll N;
    cin >> N;
    long double n = (sqrt(8LL*N+1)-1.0)/2.0;
    if (!((n - (ll)n) < 1e-10)) {
        cout << "NO" << endl;
    }
    else {
        cout << "YES" << endl;
        cout << (ll)n << endl;
    }
    return 0;
}