n = int(input())

t = list(range(10))
ans = [0] * 10

for i in range(n):
    a, b, c, d, r = input().split()
    a = int(a)
    b = int(b)
    c = int(c)
    d = int(d)
    if r == "NO":
        ans[a] -= 1
        ans[b] -= 1
        ans[c] -= 1
        ans[d] -= 1
    else:
        ans[a] += 1
        ans[b] += 1
        ans[c] += 1
        ans[d] += 1
        
print(ans.index(max(ans)))