Problem:
Score : 300 points

Problem Statement

There are N people living on a number line.

The i-th person lives at coordinate X_i.

You are going to hold a meeting that all N people have to attend.

The meeting can be held at any integer coordinate. If you choose to hold the meeting at coordinate P, the i-th person will spend (X_i - P)^2 points of stamina to attend the meeting.

Find the minimum total points of stamina the N people have to spend.

Constraints

All values in input are integers.

1 \leq N \leq 100

1 \leq X_i \leq 100

Input

Input is given from Standard Input in the following format:

N
X_1 X_2 ... X_N

Output

Print the minimum total stamina the N people have to spend.

Sample Input 1

2
1 4

Sample Output 1

5

Assume the meeting is held at coordinate 2. In this case, the first person will spend (1 - 2)^2 points of stamina, and the second person will spend (4 - 2)^2 = 4 points of stamina, for a total of 5 points of stamina. This is the minimum total stamina that the 2 people have to spend.

Note that you can hold the meeting only at an integer coordinate.

Sample Input 2

7
14 14 2 13 56 2 37

Sample Output 2

2354

Solution in Java (OpenJDK 11.0.6) (judge verdict: Wrong Answer)

import java.util.Arrays;
import java.util.Scanner;
import java.util.stream.Stream;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int len = Integer.parseInt(sc.nextLine());
		if (len == 1) {
			System.out.println(sc.nextLine());
		}else {
			int[] line = Stream.of(sc.nextLine().split(" ", 0)).mapToInt(Integer::parseInt).toArray();
			Arrays.sort(line);
			long min = 1000000000000000000L;
			long ans = 0;
			for (int i = line[0]; i <= line[len - 1]; i++) {
				ans = 0;
				for (int j = 0; j < len; j++) {
					ans += (line[j] - i)*(line[j] - i);
				}
				if (ans < min) {
					min = ans;
				}
			}
			System.out.println(min);
		}

	}
}