题解 | #查找兄弟单词#

#include <bits/stdc++.h>
using namespace std;

int main() {
    int n;
    vector<string> vec;
    cin >> n;
    string str;
    for (int i = 0; i < n; i++) {
        cin >> str;
        vec.push_back(str);
    }
    string targetstr;
    cin >> targetstr;
    int k;
    cin >> k;

    string orderstr = targetstr;
    sort(orderstr.begin(), orderstr.end());

    vector<string> result;

    for (auto s : vec) {
        string orders = s;
        if (orders != targetstr) {
            sort(orders.begin(), orders.end());
            if (orders == orderstr) {
                result.push_back(s);
            }
        }
    }

    sort(result.begin(), result.end());
    cout << result.size() << endl;
    if(result.size() >=k) {
        cout << result[k-1] << endl;
    }

}