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.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.stream.IntStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.stream.LongStream;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.Reader;
import java.util.OptionalInt;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
import java.io.Writer;
import java.io.OutputStreamWriter;
import java.io.BufferedReader;
import java.util.NoSuchElementException;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author Ruins He
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        OutputWriter out = new OutputWriter(outputStream);
        TaskD solver = new TaskD();
        solver.solve(1, in, out);
        out.close();
    }

    static class TaskD {
        public void solve(int testNumber, InputReader in, OutputWriter out) {
            int n = in.nextInt();
            int[] a = in.nextInts(n);
            long sum = Arrays.stream(a).mapToLong(value -> value).sum();
            int max = Arrays.stream(a).max().getAsInt();
            long g = 0;
            for (int i = 0; i < n; i++) {
                g = Maths.gcd(g, max - a[i]);
            }
            out.print(((long) max * n - sum) / g).print(' ').println(g);
        }

    }

    static class OutputWriter {
        private final PrintWriter writer;

        private OutputWriter(Writer writer, boolean autoFlush) {
            this.writer = new PrintWriter(new BufferedWriter(writer, 32767), autoFlush);
        }

        public OutputWriter(Writer writer) {
            this(writer, true);
        }

        public OutputWriter(OutputStream outputStream) {
            this(new OutputStreamWriter(outputStream), false);
        }

        public OutputWriter println(long value) {
            writer.println(value);
            return this;
        }

        public OutputWriter print(char value) {
            writer.print(value);
            return this;
        }

        public OutputWriter print(long value) {
            writer.print(value);
            return this;
        }

        public void close() {
            writer.close();
        }

    }

    static class Maths {
        private Maths() {
        }

        public static long gcd(long a, long b) {
            long c;
            while (a != 0) {
                c = a;
                a = b % a;
                b = c;
            }
            return b;
        }

    }

    static class InputReader {
        public final BufferedReader reader;
        public StringTokenizer tokenizer = null;

        public InputReader(Reader reader) {
            this.reader = new BufferedReader(reader, 32767);
        }

        public InputReader(InputStream inputStream) {
            this(new InputStreamReader(inputStream));
        }

        public String next() {
            if (hasNext()) return tokenizer.nextToken();
            else throw new NoSuchElementException();
        }

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

        public int[] nextInts(int n) {
            int[] res = new int[n];
            for (int i = 0; i < n; i++) res[i] = nextInt();
            return res;
        }

        public boolean hasNext() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    String nextLine = reader.readLine();
                    if (nextLine == null) return false;
                    tokenizer = new StringTokenizer(nextLine);
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.hasMoreTokens();
        }

    }
}