#include<bits/stdc++.h>
typedef long long ll;
using namespace std;
int INF = 1LL << 30;
int MOD = 1e9+7;
main(){
    ll maxi = 1e18;
    cin >> maxi;
    ll cnt = 0;
    for(ll i = 1,num = 0;num < maxi;i++){
        num += i;
        cnt++;
    }
    if(cnt * (cnt+1) / 2 == maxi){
        cout << "YES" << endl;
        cout << cnt << endl;
    }else{
        cout << "NO" << endl;
    }
}