import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

import numpy as np

N = int(readline())
C = np.fromstring(readline(), np.int64, sep=' ')
LH = np.fromstring(read(), np.int64, sep=' ')

MOD = 998244353

L = LH[::2]
H = LH[1::2]

def hadamard_transform(A):
    A = np.asarray(A)
    N = len(A)
    n = (N-1).bit_length()
    A = A.reshape((2,) * n)
    for i in range(n):
        slice_0 = (slice(None),) * i + (0,) + (slice(None),) * (n-i-1)
        slice_1 = (slice(None),) * i + (1,) + (slice(None),) * (n-i-1)
        A[slice_0] += A[slice_1]
        A[slice_1] = A[slice_0]  - A[slice_1] * 2
    return A.ravel()

coef = hadamard_transform(C)

x = (np.maximum(coef * L, coef * H) % MOD).sum() % MOD

inv_2 = pow(2, MOD-2, MOD)
x *= pow(inv_2, N, MOD)
x %= MOD
print(x)