#include <bits/stdc++.h>
#define rep(i,n)for(int i=0;i<(n);i++)
using namespace std;
typedef long long ll;

int main(){
	ll n;cin>>n;
	ll l=1,r=3000000000;
	while(l!=r){
		ll t=(l+r)/2;
		if(r-l==1)t=r;
		if(t*(t+1)/2<=n)l=t;
		else r=t-1;
	}
	if(l*(l+1)/2!=n)puts("NO");
	else{
		puts("YES");
		printf("%lld\n",l);
	}
}