rt,90分

#include<bits/stdc++.h>
using namespace std;
const int N=2e6+5;
int n,a[N];
int main()
{
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
	}
	sort(a+1,a+1+n);
	int s=1;
	for(int i=2;i<=n;i++){
		if(a[i]!=a[i-1]){
			cout<<a[i-1]<<" "<<s<<"\n";
			s=1;
		}else{
			s++;
		}
		if(i==n){
			cout<<a[i]<<" "<<s<<"\n"; 
		}
	}
	return 0;
}