# include <iostream>
# include <algorithm>
using namespace std;

int main()
{
    int n;
    cin >> n;
    int a[20000010], cnt[1500000010] = {};
    for (int i = 1; i <= n; i++)
    {
        cin >> a[i];
        cnt[a[i]]++;
    }
    sort (a + 1, a + n + 1);
    for (int i = 1; i <= a[n]; i++)
    {
        if (cnt[i] != 0)
        {
            cout << i << " " << cnt[i] << endl;
        }
    }
    return 0;
}

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