# -*- coding: utf-8 -*-
N = input()
ref = [0] * 10
A = [0] * 4
for i in range(N):
    tmp = raw_input().split()
    A[0:4] = map(int, tmp[0:4])
    R = tmp[4]
    if R == "NO":
        cnt = -1
    elif R == "YES":
        cnt = 1
    for j in range(4):
        ref[A[j]] += cnt
rmax = max(ref)
print ref.index(rmax)