package teste;

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        int[] vetor = new int[3];

        Scanner sc = new Scanner(System.in);

        for(int i = 0; i < vetor.length; i++) {
            vetor[i] = Integer.parseInt(sc.nextLine());
        }

        for(int j = 0; j < vetor.length; j++) {
            int count = 0;

            for(int i = 1; i <= vetor[j]; i++) {
                if(vetor[j] % i == 0) {
                    count++;
                }
            }

            if(count == 2) {
                System.out.println(vetor[j] + " - " + j);
            }
        }
    }
}