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

void YES(int gue[], int *ans);
void NO(int gue[], int *ans);

int main(void) {
    int N;
    int k[4] = {0};
    int Ans[10] = {0};
    char R[4];
    int m = 0;
    int s = 0;
    scanf("%d", &N);

    for (int i = 0; i < N; i++) {
        
        for (int j = 0; j < 4; j++) {
            scanf("%d", &k[j]);
        }
        scanf("%s", R);
        if (R[0] == 'Y') {
            YES(k, Ans);
        } else if (R[0] == 'N') {
            NO(k, Ans);
        }
    }
    for (int i = 0; i < 10; i++) {
        if (Ans[i] >= m) {
            m = Ans[i];
            s = i;
        }
    }
    printf("%d\n", s);
    
    return EXIT_SUCCESS;
}

void YES(int gue[], int *ans) {
    for (int i = 0; i < 4; i++) {
        for (int j = 0; j < 10; j++) {
            if (j == gue[i]) {
                (*(ans+j))++;
            }
        }
    }
    return;
}

void NO(int gue[], int *ans) {
    for (int i = 0; i < 4; i++) {
        for (int j = 0; j < 10; j++) {
            if (j == gue[i]) {
                (*(ans+j))--;
            }
        }
    }
    return;
}