#include <stdio.h>
using namespace std;
int main()
{
#ifndef ONLINE_JUDGE
   freopen ("THONGKE.INP", "r", stdin);
   freopen ("THONGKE.OUT", "w", stdout);
#endif
    long long i,n,a[11];
    char temp;
    scanf("%ld\n",&n);
    for (i = 1; i < 11; i++)
    {
        a[i] = 0;
    }
    for (i = 1; i <= n ; i++)
    {
        scanf("%d ",&temp);
        a[temp]++;
    }
    for (i = 1; i < 11; i++)
    {
        if (a[i] != 0)
        {
            printf("%ld %ld\n",i,a[i]);
        }
    }
    return 0;
}