#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 4000000000000000001

vector<vector<string>> s(6);
int main(){
	
	s[0] = {};
	int n;
	cin>>n;
	if(n>=4){
		cout<<"YES"<<endl;
	}
	else{
		assert(false);
	}
	return 0;
	for(int i=1;i<=n;i++){
		rep(j,1<<s[i-1].size()){
			string cur = "{";
			rep(k,s[i-1].size()){
				if((j>>k)&1){
					cur += s[i-1][k];
					cur += ',';
				}
			}
			if(cur.size()!=1)cur.pop_back();
			cur += '}';
			s[i].push_back(cur);
		}
		sort(s[i].begin(),s[i].end());
	}
	cout<<s[n].size()<<endl;
	
	return 0;
}