N = [0]*10
n = int(input())
s = [list(input().split()) for i in range(n)]
for i in range(n):
    if s[i][4]=="NO":
        s[i].remove("NO")
        for j in s[i]:
            N[int(j)] -= 1
    else:
        s[i].remove("YES")
        for j in s[i]:
            N[int(j)] += 1
print(N.index(max(N)))