#include <iostream>
#include <map>
using namespace std;
int main()
{
    int n;
    map<int, int> M;
    cin >> n;
    for (int i = 0, x; i < n; i++)
    {
        cin >> x;
        M[x]++;
    }
    for (map<int, int>::iterator ite = M.begin(); ite != M.end(); ++ite)
        cout << ite->first << " " << ite->second << endl;
    return 0;
}