import java.io.*;
    public class Q2
   {
       public static void main (String[] args)throws Exception
      {
         BufferedReader in = new BufferedReader (new FileReader ("DATA2.TXT"));
         BufferedWriter out = new BufferedWriter (new FileWriter ("OUT2.TXT"));
         String ans;
         int n;
         String []st;
         String let;
         String num;
         for (int i = 0; i < 5;i++)
         {n  =0;
            st = in.readLine().split(" ");
            num = st[0];
            let = st[1];
            ans = num;
         
            while (ans.length()!=1)
            {
               n=0;
            
               for (int x = 0; x< ans.length();x++)
               {
                  n+=(int)(ans.charAt(x)-'1'+1);
               //	 System.out.println (ans.charAt(x)-'1'+1);
               }
               ans = (""+n);
            }
         //System.out.println ("a" +ans);
         
            if (Integer.parseInt (ans) + 'A' - 1 == let.charAt(0))
            {
               out.write ("match");
               out.newLine();
            }
            else
            {
               out.write ("error");
               out.newLine();
            }
            
         	
         
         }
         out.close();
      }
   }