python3

ls = []
while True:
    try:
        a = input()
        #print(a)
        ls.append(eval(a))
    except:
        break
dic = {}
flag = 1
for l in ls:

    if flag == 1:
        k = l
        dic[k] = []
        flag = 0
    else:
        dic[k].append(l)
        if len(dic[k])>=k:
            flag = 1

for k in dic.keys():
    vs = sorted(set(dic[k]))
    for v in vs:
        print(v)