/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static boolean isDescNumeric(String numOrStr) 
	{
	    int start = (int)(numOrStr.charAt(0) - '0');
	    for (int i = 0; i < numOrStr.length(); i++)
	    {
	        int n = (int)(numOrStr.charAt(i) - '0');
	        if (n != (start + i) % 10) return false;
	    }
	    return true;
	}
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		System.out.println(isDescNumeric("1234"));
		System.out.println(isDescNumeric("8901"));
		System.out.println(isDescNumeric("1345"));
	}
}

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