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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.util.*;
class Main{
	public static void main(String args[]){
      Scanner sc = new Scanner(System.in);
      int a = sc.nextInt();
			int [] b = new int[a];
      //int c = sc.nextInt();



			int sum = 0;
      for(int i = 0;i < a; i++){
				b[i] = sc.nextInt();
				sum += b[i];
			}

			int pos = 0;
			if(sum%a >= (float)a/2)pos = (sum/a) + 1;
			else pos = sum/a;
			
			sum = 0;
			for(int i = 0;i < a; i++){

				sum += (b[i] - pos)*(b[i] - pos);

			}
			System.out.println(sum);

    }


    public static long factorial(long n){
      if(n == 0){
        return new Long(1);
       }
       System.out.println(n * factorial(n-1));

      return n * factorial(n-1);
    }
}