Problem: This is the easy version of the problem. The only difference is that in this version q = 1. You can make hacks only if both versions of the problem are solved.

There is a process that takes place on arrays a and b of length n and length n-1 respectively. 

The process is an infinite sequence of operations. Each operation is as follows: 

  * First, choose a random integer i (1 ≤ i ≤ n-1). 
  * Then, simultaneously set a_i = min\left(a_i, \frac{a_i+a_{i+1}-b_i}{2}\right) and a_{i+1} = max\left(a_{i+1}, \frac{a_i+a_{i+1}+b_i}{2}\right) without any rounding (so values may become non-integer). 

See notes for an example of an operation.

It can be proven that array a converges, i. e. for each i there exists a limit a_i converges to. Let function F(a, b) return the value a_1 converges to after a process on a and b.

You are given array b, but not array a. However, you are given a third array c. Array a is good if it contains only integers and satisfies 0 ≤ a_i ≤ c_i for 1 ≤ i ≤ n.

Your task is to count the number of good arrays a where F(a, b) ≥ x for q values of x. Since the number of arrays can be very large, print it modulo 10^9+7.

Input

The first line contains a single integer n (2 ≤ n ≤ 100).

The second line contains n integers c_1, c_2 …, c_n (0 ≤ c_i ≤ 100).

The third line contains n-1 integers b_1, b_2, …, b_{n-1} (0 ≤ b_i ≤ 100).

The fourth line contains a single integer q (q=1).

The fifth line contains q space separated integers x_1, x_2, …, x_q (-10^5 ≤ x_i ≤ 10^5).

Output

Output q integers, where the i-th integer is the answer to the i-th query, i. e. the number of good arrays a where F(a, b) ≥ x_i modulo 10^9+7.

Example

Input


3
2 3 4
2 1
1
-1


Output


56

Note

The following explanation assumes b = [2, 1] and c=[2, 3, 4] (as in the sample).

Examples of arrays a that are not good: 

  * a = [3, 2, 3] is not good because a_1 > c_1; 
  * a = [0, -1, 3] is not good because a_2 < 0. 



One possible good array a is [0, 2, 4]. We can show that no operation has any effect on this array, so F(a, b) = a_1 = 0.

Another possible good array a is [0, 1, 4]. In a single operation with i = 1, we set a_1 = min((0+1-2)/(2), 0) and a_2 = max((0+1+2)/(2), 1). So, after a single operation with i = 1, a becomes equal to [-1/2, 3/2, 4]. We can show that no operation has any effect on this array, so F(a, b) = -1/2.

Solution (in PYTHON3):

Solution:
def solve():
    MOD = 10**9+7
    n = int(input())
    c = list(map(int, input().split()))
    b = [0] + list(map(int, input().split()))
    q = int(input())
    queries = list(map(int, input().split()))
    maxans = 1
    for c1 in c:
        maxans = maxans * (c1+1) % MOD
    ans = {}
    for i in range(1, n):
        b[i] += b[i-1]
    s = lb = 0
    for i in range(1, n):
        s -= b[i]
        lb = min(lb, s//(i+1))
    s = ub = c[0]
    for i in range(n):
        s += c[i] - b[i]
        ub = min(ub, s//(i+1))
    for x in queries:
        if x <= lb:
            print(maxans)
        elif x > ub:
            print(0)
        elif x in ans:
            print(ans[x])
        else:
            dp0 = [1] * 10002
            dp0[0] = 0
            bd = 0
            for i in range(n):
                dp1 = [0] * 10002
                bd += b[i] + x
                for j in range(max(bd, 0), 10001):
                    dp1[j+1] = (dp1[j] + dp0[j+1] - dp0[max(j-c[i], 0)]) % MOD
                dp0 = dp1[:]
            a = dp0[-1]
            ans[x] = a
            print(a)
 
 
import sys
input = lambda: sys.stdin.readline().rstrip()
solve()