题解 | #查找兄弟单词#

let argArr = readline().split(' ')
let j = 0
let num = argArr[j++] - 0
let arrs = []
let findArr = []
let sum = 0
for(let i = 0;i < num;i++){
    let line = argArr[j++]
    arrs.push(line)
}
let target = argArr[j++]
let k = argArr[j++]
for(let i = 0;i < num;i++){
    if((arrs[i] !== target) && (arrs[i].split('').sort().join('') === target.split('').sort().join(''))){
        sum++
        findArr.push(arrs[i])
    }
}
findArr = findArr.sort()
console.log(sum)
if(findArr[k - 1]){
    console.log(findArr[k - 1])
}