Problem: There were n types of swords in the theater basement which had been used during the plays. Moreover there were exactly x swords of each type. y people have broken into the theater basement and each of them has taken exactly z swords of some single type. Note that different people might have taken different types of swords. Note that the values x, y and z are unknown for you.

The next morning the director of the theater discovers the loss. He counts all swords — exactly a_i swords of the i-th type are left untouched.

The director has no clue about the initial number of swords of each type in the basement, the number of people who have broken into the basement and how many swords each of them have taken.

For example, if n=3, a = [3, 12, 6] then one of the possible situations is x=12, y=5 and z=3. Then the first three people took swords of the first type and the other two people took swords of the third type. Note that you don't know values x, y and z beforehand but know values of n and a.

Thus he seeks for your help. Determine the minimum number of people y, which could have broken into the theater basement, and the number of swords z each of them has taken.

Input

The first line of the input contains one integer n (2 ≤ n ≤ 2 ⋅ 10^{5}) — the number of types of swords.

The second line of the input contains the sequence a_1, a_2, ..., a_n (0 ≤ a_i ≤ 10^{9}), where a_i equals to the number of swords of the i-th type, which have remained in the basement after the theft. It is guaranteed that there exists at least one such pair of indices (j, k) that a_j ≠ a_k.

Output

Print two integers y and z — the minimum number of people which could have broken into the basement and the number of swords each of them has taken.

Examples

Input


3
3 12 6


Output


5 3


Input


2
2 9


Output


1 7


Input


7
2 1000000000 4 6 8 4 2


Output


2999999987 2


Input


6
13 52 0 13 26 52


Output


12 13

Note

In the first example the minimum value of y equals to 5, i.e. the minimum number of people who could have broken into the basement, is 5. Each of them has taken 3 swords: three of them have taken 3 swords of the first type, and two others have taken 3 swords of the third type.

In the second example the minimum value of y is 1, i.e. the minimum number of people who could have broken into the basement, equals to 1. He has taken 7 swords of the first type.

Solution (in JAVA):

Solution:
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;

public class TaskD {
    private static final String filenameIn = "input.txt";
    private static final String filenameOut = "output.txt";

    // THIS IS SOLUTION!!!!!!!
    // LOOK HERE!
    // HACK ME PLEASE, if you can!!!

    void solve() {
        int n = nextInt();
        int[] a = nextIntArray(n);

        int max = a[0];
        int min = a[0];
        for (int i = 1; i < n; i++) {
            max = Math.max(max, a[i]);
            min = Math.min(min, a[i]);
        }
        int z = gcd(max - a[0], max - a[1]);
        for (int i = 0; i < n; i++) {
            z = gcd(z, max - a[i]);
        }

        long y = 0;
        for (int i = 0; i < n; i++) {
            y += (max - a[i]) / z;
        }
        out.println(y + " " + z);

    }


    int gcd(int a, int b) {
        return b == 0 ? a : gcd(b, a % b);
    }

    /**
     * ШАБЛОН
     */

    public static void main(String[] args) {
        new TaskD().run();
    }

    void init() {
        in = new BufferedReader(new InputStreamReader(System.in));
        out = new PrintWriter(System.out);
    }

    void run() {
        try {
            long timeStart = System.currentTimeMillis();

            init();
            solve();

            out.close();

            long timeEnd = System.currentTimeMillis();
            System.err.println("Time = " + (timeEnd - timeStart));
        } catch (Exception e) {
            e.printStackTrace();
            System.exit(-1);
        }
    }

    private int ceilSearch(long arr[], int low, int high, long x) {
        int mid;

        if (x <= arr[low]) {
            return low;
        }

        if (x > arr[high]) {
            return -1;
        }

        mid = (low + high) / 2;  /* low + (high - low)/2 */

        if (arr[mid] == x) {
            return mid;
        } else if (arr[mid] < x) {
            if (mid + 1 <= high && x <= arr[mid + 1]) {
                return mid + 1;
            } else {
                return ceilSearch(arr, mid + 1, high, x);
            }
        } else {
            if (mid - 1 >= low && x > arr[mid - 1]) {
                return mid;
            } else {
                return ceilSearch(arr, low, mid - 1, x);
            }
        }
    }

    private int floorSearch(long arr[], int low, int high, long x) {
        if (low > high) {
            return -1;
        }

        if (x >= arr[high]) {
            return high;
        }

        int mid = (low + high) / 2;
        if (arr[mid] == x) {
            return mid;
        }
        if (mid > 0 && arr[mid - 1] <= x && x <
                arr[mid]) {
            return mid - 1;
        }

        if (x < arr[mid]) {
            return floorSearch(arr, low, mid - 1, x);
        }

        return floorSearch(arr, mid + 1, high, x);
    }


    /**
     * FAST_SCANNER
     */

    static final boolean ONLINE_JUDGE = System.getProperty("ONLINE_JUDGE") != null;

    BufferedReader in;
    PrintWriter out;
    StringTokenizer st;

    String nextLine() {
        try {
            return in.readLine();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

    private String delimiter = " ";

    String next() {
        while (st == null || !st.hasMoreTokens()) {
            try {
                st = new StringTokenizer(in.readLine());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        return st.nextToken(delimiter);
    }

    int nextInt() {
        return Integer.parseInt(next());
    }

    long nextLong() {
        return Long.parseLong(next());
    }

    int[] nextIntArray(int n) {
        int[] a = new int[n];
        for (int i = 0; i < n; i++) {
            a[i] = nextInt();
        }
        return a;
    }

    int[][] nextIntMatrix(int n, int m) {
        int[][] a = new int[n][m];
        for (int i = 0; i < n; i++) {
            a[i] = nextIntArray(m);
        }
        return a;
    }

    int getMaxArray(int[] a) {
        int max = Integer.MIN_VALUE;
        for (int x : a) {
            max = Math.max(max, x);
        }
        return max;
    }

    private void setDelimiter(String delimiter) {
        this.delimiter = delimiter;
    }

}