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)