import java.io.*;
import java.util.*;

public class ProgramII {
	public static String doSum(String input) {
		if (input.length() > 1) {
			int sum = 0;
			for (int i=0; i<input.length(); i++) {
				sum += Integer.parseInt(input.substring(i,i+1));
			}
			return doSum(""+sum);
		}else{
			int result = Integer.parseInt(input);
			String alpha = "ABCDEFGHIJKLMNO";
			return alpha.substring(result-1,result);
		}
	}

	public static void main(String args[]) throws Exception {
		BufferedReader in = new BufferedReader(new FileReader("DATA2.txt"));
		PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("OUT2.txt")));
		for (int i=0; i<5; i++) {
			String line = in.readLine();
			String data[] = line.split("\\s");
			//System.out.println(data.length);
			//System.out.println(doSum(data[0]).equals(data[1]) ? "match" : "error");
			out.println(doSum(data[0]).equals(data[1]) ? "match" : "error");
		}
		out.close();
		System.exit(0);
	}
}