/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner sc=new Scanner(System.in);
		// int a=10,b=20;
		// a=a+b;
		// b=a-b;
		// a=a-b;
		// System.out.println(a+" "+b);

		int arr[]={1,1,3,2,2,1,5};
	   for (int i = 0; i < arr.length; i++) {
            int count = 0;

            for (int j = i+1; j < arr.length; j++) {
                if (arr[i] == arr[j]) {
                    count++;
                }
            }

            System.out.println(arr[i] + " -> " + count);
        }
		
	}
}