Problem:
Score : 500 points

Problem Statement

There are N cards. The i-th card has an integer A_i written on it.
For any two cards, the integers on those cards are different.

Using these cards, Takahashi and Aoki will play the following game:

Aoki chooses an integer x.

Starting from Takahashi, the two players alternately take a card. The card should be chosen in the following manner:

Takahashi should take the card with the largest integer among the remaining card.

Aoki should take the card with the integer closest to x among the remaining card. If there are multiple such cards, he should take the card with the smallest integer among those cards.

The game ends when there is no card remaining.

You are given Q candidates for the value of x: X_1, X_2, ..., X_Q.
For each i (1 \leq i \leq Q), find the sum of the integers written on the cards that Takahashi will take if Aoki chooses x = X_i.

Constraints

2 \leq N \leq 100 000

1 \leq Q \leq 100 000

1 \leq A_1 < A_2 < ... < A_N \leq 10^9

1 \leq X_i \leq 10^9 (1 \leq i \leq Q)

All values in input are integers.

Input

Input is given from Standard Input in the following format:

N Q
A_1 A_2 ... A_N
X_1
X_2
:
X_Q

Output

Print Q lines. The i-th line (1 \leq i \leq Q) should contain the answer for x = X_i.

Sample Input 1

5 5
3 5 7 11 13
1
4
9
10
13

Sample Output 1

31
31
27
23
23

For example, when x = X_3(= 9), the game proceeds as follows:

Takahashi takes the card with 13.

Aoki takes the card with 7.

Takahashi takes the card with 11.

Aoki takes the card with 5.

Takahashi takes the card with 3.

Thus, 13 + 11 + 3 = 27 should be printed on the third line.

Sample Input 2

4 3
10 20 30 40
2
34
34

Sample Output 2

70
60
60

Solution in Python (3.4.3) (judge verdict: Accepted)

#参考
#https://atcoder.jp/contests/aising2019/submissions/3995168

import bisect

N,Q=map(int,input().split())

A=list(map(int,input().split()))
Asum=[0]*N
Asum2=[0]*N
total=0

for i in range(N):
  total+=A[i]
  Asum[i]=total
  if i>1:
    Asum2[i]=A[i]+Asum2[i-2]
  else:
    Asum2[i]=A[i]

X=[] 
for i in range(Q):
  X.append((int(input()),i))
X.sort(key=lambda x :x[0])
  

#yで高橋くんと青木くんの取りたいカードが初めて衝突すると考える。
#このようなyは半分より小さい所にはないので初期値を半分のところとする。
#yがNまで来た時は最初から交互に取る
#Xを小さい順から計算することで、yの値が単調増加になる
y=N//2-1
ans=[0]*Q
for x,i in X:
  while y<=N-1 and x>A[y]:
    y+=1
  while y<=N-1:
    takahashi=N-y
    aoki=y+1-bisect.bisect_left(A,x-(A[y]-x))
    if takahashi>aoki:
      y+=1
    else:
      break
  #右端からA[y]までは全て高橋くんが取る
  ans[i]+=Asum[N-1]-Asum[y-1]
  #青木くんはyからN-y個取っているので、その下のところから交互に取る
  if y-(N-y)-1<0:
    continue
  ans[i]+=Asum2[y-(N-y)-1]

for i in range(Q):
  print(ans[i])