MOD = 10 ** 9 + 7
INF = 10 ** 11
import sys
sys.setrecursionlimit(100000000)

def main():
    N = int(input())
    distribution = [0] * 1000
    for _ in range(N):
        s = input()
        distribution[s.count('^')] += 1
    
    M = 0
    index = -1
    for i,d in enumerate(distribution):
        if d >= M:
            M = d
            index = i
    print(index)
if __name__ == '__main__':
    main()