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 C (GCC 9.2.1) (judge verdict: Accepted)

#include<stdio.h>

int min(int x,int y){
  if (x<=y){
    return x;
  }
    return y;
}

int main(){
  int N;
  scanf("%d",&N);
  int X[N];
  for(int i=0;i<N;i++){
    scanf("%d",&X[i]);
  }

  int ans=1001001001;
  for(int p=1;p<=100;p++){
    int now =0;
    for(int j=0;j<N;j++){
      now += (X[j]-p)*(X[j]-p);
    }
     ans = min(ans,now);
  }
  printf("%d",ans);

  return 0;
}