#include <bits/stdc++.h>

#define rep(i,n) for(int i=0;i<(n);i++)

using namespace std;
using lint=long long;

int main(){
	lint n; scanf("%lld",&n);

	lint lo=1,hi=2e9;
	while(hi-lo>1){
		lint mi=(lo+hi)/2;
		if(mi*(mi+1)/2<=n) lo=mi;
		else               hi=mi;
	}
	if(lo*(lo+1)/2==n) printf("YES\n%lld\n",lo);
	else puts("NO");

	return 0;
}