http://192.168.16.233/contest/14/problem/J

#include<bits/stdc++.h>
using namespace std;
int main(){
	int a;
	cin>>a;
	int x[a+1];
	memset(x,-1,sizeof(x));
	for(int i=1;i<=a;i++){
		cin>>x[i];
	}
	for(int i=1;i<=a;i++){
		int sum=0;
		if(x[i]==-1)
		continue;
		for(int j=i+1;j<=a;j++){
			if(x[i]==x[j])
			sum++,x[j]=-1;
		}
		sum++;
		cout<<x[i]<<" "<<sum<<endl;
	}
}