import java.io.*;

public class Solution2
{
    public static void main (String[] args) throws IOException, NumberFormatException
    {
	BufferedReader input = new BufferedReader (new FileReader ("DATA2.txt"));
	PrintWriter output = new PrintWriter (new FileWriter ("OUT2.txt"));
	for (int run = 1 ; run <= 5 ; run++)
	{


	    String[] allInput = input.readLine ().split (" ");
	    String in = allInput [0];
	    char check = allInput [1].charAt (0);

	    int sum = 0;
	    while (in.length () != 1)
	    {
		for (int i = 0 ; i < in.length () ; i++)
		{
		    sum += Integer.parseInt ("" + in.charAt (i));
		}
		in = "" + sum;
		sum = 0;
	    }
	    int iCheck = Integer.parseInt (in);

	    char[] characters = new char [26];
	    // char[] characters = new char [26];
	    int[] integers = new int [26];

	    char c = 'A';
	    for (int start = 0 ; start < 26 ; start++)
	    {
		characters [start] = c;
		integers [start] = start;
		c++;
	    }

	    if (iCheck > 0)
	    {
		if (characters [iCheck - 1] == check)
		    output.println ("match");
		else
		    output.println ("error");
	    }
	    else
	    {
		output.println ("error");
	    }
	}

	output.close ();
    }
}