#P15256. [USACO26JAN2] Purchasing Milk B

[USACO26JAN2] Purchasing Milk B

Description

On National Milk Day, Farmer John is offering exclusive prices on buckets of milk! He has NN (1N1051 \leq N \leq 10^5) deals numbered from 11 to NN. For the ii'th deal, he is offering 2i12^{i-1} buckets of milk for aia_i (1ai109,ai<ai+11 \leq a_i \leq 10^9, a_i < a_{i+1}) moonies. The same deal may be taken any non-negative integer number of times.

You are thinking about QQ (1Q1041 \leq Q \leq 10^4) independent queries. For each query, you have an integer xx (1x1091 \leq x \leq 10^9) in mind and wonder what is the minimum cost to purchase at least xx buckets of milk.

Input Format

The first line contains two integers NN and QQ.

The following line contains a1,a2,,aNa_1, a_2, \ldots, a_N.

Each of the following QQ lines contains an integer xx, representing a query.

Output Format

For each query, output the minimum cost on a new line.

Note that the large size of integers involved in this problem may require the use of 64-bit integer data types (e.g., a "long long" in C/C++).

2 4
10 15
1
2
6
7
10
15
45
55
4 10
10 25 30 70
1
2
3
4
5
6
7
8
15
101
10
20
30
30
40
50
60
60
120
760

Hint

Sample 1 Explanation

In the example above, Farmer John is offering 2 deals: 1 bucket of milk for 10 moonies and 2 buckets of milk for 15 moonies. The cheapest cost to buy 1 bucket is just the cost of the 1 bucket deal and the cheapest cost to buy 2 buckets is just the cost of the 2 bucket deal.

To get 6 buckets, the cheapest way is to purchase 3 of the 2 bucket deal for a total of 45 moonies.

To get 7 buckets, the cheapest way is to purchase 3 of the 2 bucket deal and 1 of the 1 bucket deal for a total of 55 moonies.

Sample 2 Explanation

In this example, Farmer John is offering a total of 4 deals for 1, 2, 4, and 8 buckets. For each of the 10 queries, the corresponding output indicates the minimum cost to purchase at least that amount of milk. Sometimes, it is cheaper to purchase more than the specified amount.

SCORING:

  • Inputs 3-4: N2N \leq 2
  • Inputs 5-8: N10N \leq 10
  • Inputs 9-16: No additional constraints.