#include <iostream>
#include <map>
using namespace std;

int main() {
	map<int, char> cipher;

	for (int i = 0; i < 26; i++)
	{
		cipher.emplace(i, char(97 + i));
	}
	std::cout << cipher[0] << std::endl;
	// your code goes here
	return 0;
}