#include<stdio.h>
#include<string.h>

int main() {
	int turn = 0;
	int card[6][4];
	char res[6][3];
	int flg[10];

	for (int i = 0; i < 10; i++)
		flg[i] = 6;

	// 入力処理
	scanf("%d", &turn);

	for (int i = 0; i < turn; i++) {
		// 入力処理
		scanf("%d %d %d %d %s", &card[i][0], &card[i][1], &card[i][2], &card[i][3], res[i]);

		// 内容処理
		if (strcmp(res[i], "YES") == 0)
			for (int j = 0; j < 4; j++)
				flg[card[i][j]]++;
		else if (strcmp(res[i], "NO") == 0)
			for (int j = 0; j < 4; j++)
				flg[card[i][j]]--;
	}

	int ans = 0;
	int maxflg = 0;

	for (int i = 0; i < 10; i++) {
		if (maxflg < flg[i]) {
			maxflg = flg[i];
			ans = i;
		}
	}

	printf("%d", ans);

	return 0;
}