#include <iostream>

using namespace std;

int main(){

    int n,x;

    cin >> n >> x;

    int sum = ;

    for(int i =  ; i <  n ; ++ i){

        int number;

        cin>>  number;

        sum +=number;

    }

    if(sum < ) sum = -sum;

    cout<<(sum%x ? sum/x+ : sum/x) <<endl;

}