#include<iostream>
using namespace std;
int main() { // C++ L6 选择题的答案	
	char letter;
	cin>>letter; 
	if(letter=='a')
		cout<<"Apple";
	if(letter=='b')
		cout<<"Boy";
	if(letter=='c')
		cout<<"Cow";
	if(letter=='d')
		cout<<"Dog";
	 if(letter=='A')
		cout<<"Apple";
	if(letter=='B')
		cout<<"Boy";
	if(letter=='C')
		cout<<"Cow";
	if(letter=='D')
		cout<<"Dog";
	return 0;
}