include

using namespace std;

int main() {

int n;

cin >> n;

if(n % 4 == 0){

if(n % 100 == 0){

	if(n % 400 == 0)
	
		cout << "Y\n";
		
	else cout << "N\n";
	
}

else

	cout << "Y\n";
	

}

else cout << "N\n";

return 0;

}