#include<bits/stdc++.h>
using namespace std;

#define int long long

#define rep(i,n) for(int i=0;i<(n);i++)
#define pb push_back
#define all(v) (v).begin(),(v).end()
#define fi first
#define se second
typedef vector<int>vint;
typedef pair<int,int>pint;
typedef vector<pint>vpint;

template<typename A,typename B>inline void chmin(A &a,B b){if(a>b)a=b;}
template<typename A,typename B>inline void chmax(A &a,B b){if(a<b)a=b;}

signed main(){
    int n;cin>>n;

    int lb=0,ub=3000000000;
    while(ub-lb>1){
        int mid=(ub+lb)/2;
        if(mid*(mid+1)/2<=n)lb=mid;
        else ub=mid;
    }
    if(lb*(lb+1)/2==n)cout<<"YES"<<endl<<lb<<endl;
    else cout<<"NO"<<endl;
        return 0;
}