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


public class Owl {
	
	public static void main(String[] args) {
		
		BufferedReader bfr = new BufferedReader(new InputStreamReader(System.in));
		
		try {
			
			String line = bfr.readLine();
			while (line != null) {
				
				if (line.startsWith("END")) break;
				
				StringBuilder sb = new StringBuilder(line);
				
				for (int i=sb.length()-1; i>=0; i--) {
					if (sb.charAt(i) != '0') {
						sb.setCharAt(i, (char)(sb.charAt(i)-1));
						break;
					}
				}
				System.out.println(Integer.parseInt(sb.toString()));
				
				line = bfr.readLine();
			}
			
		} catch (Exception e) {
			e.printStackTrace();
		}
		
	}

}