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#include <stdio.h>

int main()
{
  int n;
  int m;

  scanf("%d %d", &n, &m);

  unsigned long long int times[n];

  for (int i = 0; i < n; i++)
  {
    scanf("%llu", &times[i]);
  }

  for (int i = 0; i < m; i++)
  {
    unsigned long long int d;

    unsigned long long int t = 0;

    unsigned long long int a = 0;

    scanf("%llu", &d);

    for (int j = 0; j < n; j++)
    {
      unsigned long long int end = times[j];

      if (end < t + d)
      {
        end = t + d;

        a += end - times[j];
      }

      t = end;
    }

    printf("%llu\n", a);
  }

  return 0;
}