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#include <bits/stdc++.h>

#define FOR(x, b, e) for(int x = b; x <= (e); ++x)
#define FORD(x, b,e) for(int x = b; x >= (e); --x)
#define REP(x, b) for(int x = 0; x < (b); ++x)
#define SIZE(c) ((int)c.size())
#define ALL(c) (c).begin(), (c).end()
#define MP make_pair
#define PB push_back
#define ST first
#define ND second

using namespace std;

typedef long long LL;
typedef vector <int> VI;
typedef pair <int, int> PII;
typedef vector <PII> VPII;

const int MAXN = 1e6 + 9;

LL tab[MAXN];
int n;

LL licz(int a)
{
    LL wyn = 0;
    LL pop = 0;

    REP(i, n)
      {
          pop = max(tab[i], pop + a);
          wyn += max(0ll, pop - tab[i]);
      }

    return wyn;
}

int main()
{
    int m, a;

    cin>>n>>m;

    REP(i, n)
      scanf("%lld", &tab[i]);

    REP(i, m)
      {
          scanf("%d", &a);

          printf("%lld\n", licz(a));
      }

    return 0;
}