蓝桥O3月刷题计划····

[星~星~]

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class lianxi200_英文字母 {
	static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
	public static void main(String agrs[]) throws NumberFormatException, IOException {
		int n = Integer.parseInt(br.readLine());
		System.out.println((char) ('A'+n-1));
	}
}