import java.io.*;

class ReadStuff {
	public static void main(String[] args) throws IOException {

		String inLine;

		FileReader fr = new FileReader("file.txt");
		BufferedReader br = new BufferedReader(fr);
		BufferedWriter outFile =
			new BufferedWriter(new FileWriter("file2.txt"));


		while ((inLine = br.readLine()) != null) {
			
			String a= inLine;
			String b= a.substring(0,1);
			int bInt = Integer.parseInt(b);
			String c= a.substring(1,2);
			int cInt = Integer.parseInt(c);
			String d= a.substring(2,3);
			int dInt = Integer.parseInt(d);
			String e= a.substring(3,4);
			int eInt = Integer.parseInt(e);
			String f= a.substring(4,5);
			int fInt = Integer.parseInt(f);
			String g= a.substring(5,6);
		      //  int gInt = Integer.parseInt(g);
			
			int h= bInt+ cInt+ dInt+ eInt+ fInt;
			
			String i= h+"";
			
			String j= i.substring(0,1);
			int jInt = Integer.parseInt(j);
			String k= i.substring(1,2);
			int kInt = Integer.parseInt(k);
			
			int l= jInt+kInt;
			String m= l+"0";
			
			String n= m.substring(0,1);
			int nInt = Integer.parseInt(n);
			String o= m.substring(1,2);
			int oInt = Integer.parseInt(o);
			
			int p= oInt+nInt;
			
		       
		       String answer;
		       String abc;
			if (p==3){abc="c";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			
			
			else if (p==1){abc="a";
			
			if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			
			
			 else if (p==2){abc="b";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==4){abc="d";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==5){abc="e";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==6){abc="f";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==7){abc="g";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==8){abc="h";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			 else if (p==9){abc="i";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==10){abc="j";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==11){abc="k";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==12){abc="l";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==13){abc="m";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==14){abc="n";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==15){abc="o";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			 else if (p==16){abc="p";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==17){abc="q";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==18){abc="r";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==19){abc="s";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==20){abc="t";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==21){abc="u";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==22){abc="v";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			 else if (p==23){abc="w";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==24){abc="x";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			else if (p==25){abc="y";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			 else if (p==25){abc="z";if (abc==g){answer="match";}
			 else {answer="error";}outFile.write(answer);}
			 
			 
			 
			
		     
			
		       
		       
			
		       
			
		       
		}

		br.close();
		outFile.close();
	}
}