def d = input()
    map(int(max_in_list(d))):
    maximum = max_in_list(d)
    print(maximum)


input()
list = {}
d[key] = value
    for i in list
        value.count

def count_words(s):
    s = s.split(' ')
    result = {}
    for i in s:
        s.count[i]
        result[i] = s.count[i]
        return result



