#include<bits/stdc++.h>
#define REP(i,n) for(int i=0,i##_len=int(n);i<i##_len;++i)
#define rep(i,a,b) for(int i=int(a);i<int(b);++i)
#define All(x) (x).begin(),(x).end()
#define rAll(x) (x).rbegin(),(x).rend()
using namespace std;
using ll = long long;

int main(){
    string s;cin>>s;
    int ls = s.back();
    switch(ls)
    {
        case 2:
        case 3:
        case 7:
        case 8:
        cout<<"NO"<<endl;
        break;
        default:
        cout<<"YES"<<endl;
    }
}