#include<bits/stdc++.h>
#include <atcoder/all>
#ifdef LOCAL
#include <debug_print.hpp>
#define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#define debug(...) (static_cast<void>(0))
#endif
using namespace atcoder;
using mint=modint998244353;
using namespace std;
using ll=long long;
using ul=unsigned long long;
int dx[9] = {-1, 1, 0, 0, -1, -1, 1, 1, 0};
int dy[9] = {0, 0, -1, 1, -1, 1, -1, 1, 0};
using Graph=vector<vector<int>>;
ll op(ll a,ll b){return min(a,b);}
ll e(){return 2e9;}
int main(){
	ll N;
	cin>>N;
	ll l=0,r=2e9;
	while(r-l>1){
		ll m=(r+l)/2;
		if(m*(m+1)/2<=N)l=m;
		else r=m;
	}
	if(l*(l+1)/2!=N)cout<<"NO"<<endl;
	else {
		cout<<"YES"<<endl;
		cout<<l<<endl;
	}
}