#include <iostream>

using namespace std;

// This assignment is worth 5 points
// -1 for using math library
// -1 for not having excess input checks or automatic 0 fills

const int size = 10;
int arr[size], k = 0, min_difference, difference_test;
int index0 = 0, index1 = 1;
char ch;
string temp;

int main()
{
	cout << "Enter " << size << " numbers: ";
	do
	{
		cin >> arr[k];
		k++;
		ch = cin.get();
	} while(ch != '\n' && k < size);
	if(ch != '\n' && k == size)
		getline(cin, temp);
	else if(ch == '\n' && k < size)
		for(k; k < size; k++)
			arr[k] = 0;

	min_difference = arr[0] - arr[1];	// Initialize the difference
	if(min_difference < 0)
		min_difference *= -1;

	for(int i = 0; i < size - 1; i++)
	{
		for(int j = i+1; j < size; j++)
		{
			difference_test = arr[i] - arr[j];
			if(difference_test < 0)	// Absolute value application
				difference_test *= -1;

			if(difference_test < min_difference)
			{
				min_difference = difference_test;
				index0 = i;	// Save the pair with the min
				index1 = j;
			}
		}
	}

	cout << "The closest numbers are " << arr[index0] << " at position "
	     << index0 << " and " << arr[index1] << " at position " << index1
	     << endl;

	return 0;
}