import java.util.Scanner;

public class Ege11 {
    public static void main(String [] args) {
        final int num = 13;
        Scanner s = new Scanner(System.in);
        int N = s.nextInt();
        int[] number = new int[num];
        int[] count = new int[num];
        for (int i = 1; i < num ; i++){
            count[i] = 0;
            number[i] = i;
        }
        for (int i = 0; i < N; i++) {
            int A = s.nextInt();
            count[A]++;
        }
        int t = 0;
        int p = 0;
        for(int i = 1; i < num; i++){
            for(int j = 2 ; j < num; j++){
                if( count[j] > count[j-1]){
                    t = count[j];
                    count[j] = count[j-1];
                    count[j-1] = t;
                    p = number[j];
                    number[j] = number[j-1];
                    number[j-1] = p;
                }
            }
        }
        for(int i = 1 ; i < num; i++){
            if(count[i] > 0){
                System.out.println(number[i] + " " + count[i]);
            }
        }
    }}