pps dz

# дз по итератору
cards = []
for i in ('Пики','Буби','Черви','Крести'):
    for j in '6789jqka':
        cards.append(i + ' ' + j)
iterator = iter(cards)
for i in range(36):
    print(next(iterator))



# лямбда
from functools import reduce
lenarray = int(input())
array = []
for i in range(lenarray):
    array += [int(input())]
res = list(filter(lambda x: (x ** 2) % 9 == 0, array))
ans = reduce(lambda x, y: x if x > y else y,res)
print(ans)



# дз по f строкам
ip = [int(input()) for i in range(4)]
a, b, c, d = ip
for temp in ["{:08b}.", "{:b}.", "{:o}.", "{}.", "{:x}."]:
    print((temp * 4)[:-1].format(a, b, c, d))


# дз по файлам
#6
def allstfile(namefile):
    with open(namefile,'r') as f:
        a = []
        for line in f:
            a += [line.rstrip("\n")]
        endstring = " "
        for i in range(len(a)):
            endstring += a[i] + ' '
        return endstring
# 8
def stringclean(string):
    return string.strip("!?.")

#14
def information(name):
    dictionary = {}
    with open(name,"r",encoding="utf-8") as f:
        base = f.readlines()
    for line in base:
        L = line.split()
        if L[2].isdigit():
            dictionary[L[0]] = (L[1],L[2])
    return dictionary