count = []
for _ in range(int(input())):
    eye = 0
    for s in input():
        if s == '^':
            eye += 1
    if eye > len(count):
        for _ in range(eye - len(count)):
            count.append(0)
    count[eye - 1] += 1

for i in range(len(count) - 1, 0, -1):
    if max(count) == count[i]:
        print(i + 1)
        break