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

// 処理
class Process {
    private PrintWriter printWriter;
    private int[][]  A;
    private String[] R;

    Process(PrintWriter printWriter, int[][] A, String[] R) {
        this.printWriter = printWriter;
        this.A = A;
        this.R = R;
    }

    // 結果を出力
    void printResult() throws IOException {
        int[] numCount = new int[10];

        for(int i = 0; i < A.length; i++) {
            for(int j = 0; j < A[i].length; j++) {
                numCount[A[i][j]] = R[i].equals("YES") ? (numCount[A[i][j]] + 1) : (numCount[A[i][j]] - 1);
            }
        }

        int max = IntStream.of(numCount).max().getAsInt();
        int index = 0;
        for(int i = 0; i < numCount.length; i++) {
            if(numCount[i] == max) {
                index = i;
                break;
            }
        }

        printWriter.println(index);
    }
}

public class Main {
    public static void main(String[] args) throws IOException {
        var bufferedReader = new BufferedReader(new InputStreamReader(System.in));
        var printWriter    = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));

        // 入力
        int N = Integer.parseInt(bufferedReader.readLine().trim());

        String[] input = new String[5];
        int[][] A = new int[N][4];
        String[] R = new String[N];
        for(int n = 0; n < N; n++) {
            input = bufferedReader.readLine().trim().split("[ ]+");
            for(int a = 0; a < A[n].length; a++) {
                A[n][a] = Integer.parseInt(input[a]);
            }
            R[n] = input[4];
        }

        // Process クラスで処理を行う
        var process = new Process(printWriter, A, R);
        process.printResult();

        // 各ストリームを閉じる
        // 出力ストリームを閉じるときに標準出力に文字を出力する
        bufferedReader.close();
        printWriter.close();
    }
}