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#include <iostream>
#include <vector>
using namespace std;
vector <long long> tab;
void solve(int & t)
{
    long long sumtime = 0;
    long long currtime = 0;
    for(int i = 0; i<tab.size(); i++)
    {
        if(tab[i]>=currtime + t)
        {
            currtime = tab[i];
        }
        else
        if(tab[i]<currtime + t)
        {
            currtime+=t;
            sumtime += currtime - tab[i];
        }

    }
    cout << sumtime << endl;

}
int main()
{
    ios_base::sync_with_stdio(0);
    int a,b,d;
    long long c;
    cin >> a >> b;
    for(int i =0; i<a; i++)
    {
        cin >> c;
        tab.push_back(c);
    }
    for(int i = 0; i<b; i++)
    {
        cin >> d;
        solve(d);
    }

    return 0;
}