#include<bits/stdc++.h>
using namespace std;
int main(){
	int x,n,a[1000]={};
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>x;
		a[x-1]++;
	}
	for(int i=0;i<1000;i++){
		if(a[i]!=0) cout<<i+1<<" "<<a[i]<<endl;
	}
}
/**************************************************************
	Problem: 1740
	User: wangyiyang
	Language: C++
	Result: Runtime Error
****************************************************************/