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 Python (3.4.3) (judge verdict: Accepted)

import math

N=int(input())

inputs=input().split(" ")
X=[]

mini=100
maxi=0


for i in inputs:
    i=int(i)
    X.append(i)

    if int(i)<mini:
        mini=i

    if int(i)>maxi:
        maxi=i

minpowersum=math.pow(10,9)
for P in range(mini,maxi+1):

    powersum=0
    for j in range(N):
        powersum+=math.pow((X[j]-P),2)

    if powersum<minpowersum:
        minpowersum=powersum


print(int(minpowersum))