#include<bits//stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define req(i,n) for(int i = 1;i <=  n; i++)
#define rrep(i,n) for(ll i = n-1;i >= 0;i--)
#define ALL(obj) begin(obj), end(obj)
#define RALL(a) rbegin(a),rend(a)
typedef long long int ll;
typedef long double ld;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
const ll INF = 1e18;
ll mod = 998244353;
int main(){
    ll n;cin >>n;
    ll ng = 1e9,ok = 0;
    while(ng-ok >1){
        ll mid = (ng+ok)/2;
        ll sum = (mid+1)*mid/2;
        if(sum <= n) ok = mid;
        else ng = mid;
    }if(ok*(ok+1)/2==n){
        cout << "YES"<<endl;
        cout << ok <<endl;
    }else cout <<"NO" <<endl; 
}