#include<bits/stdc++.h>
using namespace std;
int main(){
	int a;
	cin>>a;
	if(a%3==0&&a%5!=0){
		cout<<"Y";
	}else{
		cout<<"N";
	}
}
/**************************************************************
	Problem: 1674
	User: tonghuawei
	Language: C++
	Result: Wrong Answer
****************************************************************/