#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, x, m = 0, sum = 0;
  cin >> n >> x;
  int *arr = new int[n];
  for (long long i = 0; i < n; i++) cin >> arr[i], sum += arr[i];
  if (sum > 0)
    while (sum > 0) {
      sum -= x;
      m++;
    }
  else
    while (sum < 0) {
      sum += x;
      m++;
    }
  cout << m;
  return 0;
}
