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import java.util.ArrayList;
import java.util.TreeMap;

public class Mag {
    public TreeMap<Integer, ArrayList<String>> mas;

    /*   protected Mag(int n) {
ArrayList<String> neo = new ArrayList<String>();
for (int i = 1; i <= n; i++) {
    this.mas.put(i, neo);
}
}        */

    public void addNew(int k, String s) {
        ArrayList<String> neo = new ArrayList<String>();
        if (mas.containsKey(k)) {
            neo = mas.get(k);
        }
        neo.add(s);
        mas.put(k, neo);

    }

    protected void showDesk(int k) {
        ArrayList<String> neo = new ArrayList<String>();
        neo = mas.get(k);
        while (neo.iterator().hasNext()) {
            System.out.print(neo.iterator().next() + " ");
            System.out.println("");
        }
    }
}



public class Main {
    public static void main(String[] args) {
        Mag mag = new Mag();
        mag.addNew(5,"SDF");
        mag.addNew(5,"SDuu");
        mag.addNew(5,"SDuygF");
        mag.showDesk(5);
    }
}