import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;

public class Main {

	public static void main(String[] args) {
	      BufferedReader stdReader =new BufferedReader(new InputStreamReader(System.in));
	      int[] num = new int[10];
	      int max = 0;
	      try {
		      int N = Integer.parseInt(stdReader.readLine());
		      
		      for(int i=0;i<N;i++){
		    	  String[] temps = stdReader.readLine().split(" ");
		    	  if(temps[4].equals("YES")){
		    		  for(int j=0;j<4;j++) num[Integer.parseInt(temps[j])]++;		    		  
		    	  }else{
		    		  for(int j=0;j<4;j++) num[Integer.parseInt(temps[j])]--;
		    	  }
		      }
		      for(int i=0;i<10;i++){
		    	  if(max < num[i]) max = num[i];
		      }		      
		      for(int i=0;i<10;i++){
		    	  if(max == num[i]) System.out.println(i);
		      }	      
	    	  } catch (IOException e) {
			e.printStackTrace();
	      }
	}	
}