题解 | 全排列

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

int main() {
    string s;
    cin >> s;
    sort(s.begin(), s.end());
    cout << s << endl;
    while (next_permutation(s.begin(), s.end())) {
        cout << s << endl;
    }
}