#include <iostream>
#include <set>

using namespace std;

int main() {

    set<int> s = {1, 1, 5, 3, 2, 0, 5, 3, 2};



    for(int x: s) {
        cout << x << " ";
    }
    cout << endl;

    for(set<int>::iterator it = s.begin(); it != s.end(); it++) {
        cout << *it << " ";
    }
    cout << endl;
    return 0;
}