#include<bits/stdc++.h>
#define REP(i,n) for(int i=0;i<(n);i++)
#define ALL(v) (v).begin(),(v).end()
#define int long long
#define INF 1e18
#define MOD 1000000007
#define SIZE 100005

using namespace std;
typedef pair<int,int> P;

//-----------------------------------------------------------------------

signed main()
{   
    cin.tie(0);
    ios::sync_with_stdio(false);

    int n; cin>>n;
    int D=1+8*n;
    int k=(int)sqrt(D);
    if(k*k==D && k&1){
        cout<<"YES"<<endl;
        cout<<(-1+k)/2<<endl;
    }
    else{
        cout<<"NO"<<endl;
    }
}