/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		System.out.println(extractNumber("m4353"));
	}
 
	private static final Pattern p = Pattern.compile("([0-9]+)$");
 
    public static int extractNumber(String value) {
        Matcher m = p.matcher(value);
        if(m.find()) {
            return Integer.parseInt(m.group(1));
        } else {
            return Integer.MIN_VALUE; // error code
        }
    }
}

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