题解 | #查找兄弟单词#

#简单题不解释
import sys
data=sys.stdin.readlines()

l=data[0].split(" ")
n=int(l[0])
# print(n)
dic=l[1:n+1]
key=l[n+1]
# print('dic:',len(dic))
# print(key)

for item in dic:
    if item==key:
        dic.remove(item)
# print('dic:',len(dic))

def isbrother(a,b):
    if sorted(a)==sorted(b):
        return True
    else:
        return False

result=[]
for i in range(len(dic)):
    if isbrother(key,dic[i]):
        result.append(dic[i])

result=sorted(result)
k=int(l[-1].strip("\n"))
print(len(result))
if k-1<len(result):
    print(result[k-1])