from collections import OrderedDict

if __name__ == '__main__':
    ord_dict = OrderedDict()
    n = int(input())
    #inp = list()
    for i in range(n):
        inp = input()
        if inp in ord_dict:
            ord_dict.update({inp:ord_dict.get(inp)+1})
        else:
            ord_dict.update({inp:1})
    print(len(ord_dict))
    print(*ord_dict.values())