import java.util.*;
import static java.lang.System.*;
import java.io.*;

public class Main {
	static FastScanner sc = new FastScanner(System.in);
	public static void main(String[] args) {
		HashMap<Character,Character> map = new HashMap<>();
		map.put('0','A');
		map.put('1','B');
		map.put('2','C');
		map.put('3','D');
		map.put('4','E');
		map.put('5','F');
		map.put('6','G');
		map.put('7','H');
		map.put('8','I');
		map.put('9','J');
		map.put('a','K');
		map.put('b','L');
		map.put('c','M');
		map.put('d','N');
		map.put('e','O');
		map.put('f','P');
		map.put('g','Q');
		map.put('h','R');
		map.put('i','S');
		map.put('j','T');
		map.put('k','U');
		map.put('l','V');
		map.put('m','W');
		map.put('n','X');
		map.put('o','Y');
		map.put('p','Z');
		String s = BaseConversion(sc.next(),10,26);
		StringBuilder sb = new StringBuilder();
		char c;
		for (int i=0; i<s.length(); i++) {
			c = s.charAt(i);
			if (i==s.length()-1) {sb.append(map.get(c));}
			else {
				if (c=='0') {c='p';}
				else if (c=='a') {c='9';}
				else {c--;}
				sb.append(map.get(c));
			}
		}
		out.println(sb);
	}
	
	static String BaseConversion (String sn, int n, int m) {
		String sm = Long.toString(Long.parseLong(sn,n),m);
		return sm;
	}
}



class FastScanner implements Closeable {
	private final InputStream in;
	private final byte[] buffer = new byte[1024];
	private int ptr = 0;
	private int buflen = 0;
	public FastScanner(InputStream in) {this.in = in;}
	private boolean hasNextByte() {
		if (ptr < buflen) {return true;}
		else{
			ptr = 0;
			try {buflen = in.read(buffer);}
			catch (IOException e) {e.printStackTrace();}
			if (buflen <= 0) {return false;}
		}
		return true;
	}
	private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
	private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
	public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}
	public String next() {
		if (!hasNext()) throw new NoSuchElementException();
		StringBuilder sb = new StringBuilder();
		int b = readByte();
		while(isPrintableChar(b)) {
			sb.appendCodePoint(b);
			b = readByte();
		}
		return sb.toString();
	}
	public long nextLong() {
		if (!hasNext()) throw new NoSuchElementException();
		long n = 0;
		boolean minus = false;
		int b = readByte();
		if (b == '-') {
			minus = true;
			b = readByte();
		}
		if (b < '0' || '9' < b) {throw new NumberFormatException();}
		while(true){
			if ('0' <= b && b <= '9') {
				n *= 10;
				n += b - '0';
			}else if(b == -1 || !isPrintableChar(b)){return minus ? -n : n;}
			else{throw new NumberFormatException();}
			b = readByte();
		}
	}
	public int nextInt() {
		long nl = nextLong();
		if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
		return (int) nl;
	}
	public double nextDouble() { return Double.parseDouble(next());}
	public void close() {
		try {in.close();}
		catch (IOException e) {}
	}
}