#include <bits/stdc++.h>

using namespace std;

int ans, sum, x, n, q;

int main()

{
    scanf("%d %d", &n, &x);
    sum = 0;
    for (int i = 0; i < n; i++)
    {
        cin>>q;
        sum += q;
    }
    sum = abs(sum);
    ans = sum / x;
    if (sum % x != 0) ans++;
    cout<<ans<<endl;
}