#include <bits/stdc++.h>
using namespace std;
int main()
{
    map<int,int> mp;// when we write normal map that means ordered and unordered is unordered map
    int n;
    cin>>n;
    vector<int> arr(n);
    for(int i=0;i<n;i++)
    {
        cin>>arr[i];
        mp[arr[i]]++;
    }
    for(auto a: mp)
    {
        cout<<a.first<<" "<<a.second<<endl;
    }
}