mod = 998244353 imag = 911660635 iimag = 86583718 rate2 = (0, 911660635, 509520358, 369330050, 332049552, 983190778, 123842337, 238493703, 975955924, 603855026, 856644456, 131300601, 842657263, 730768835, 942482514, 806263778, 151565301, 510815449, 503497456, 743006876, 741047443, 56250497, 867605899, 0) irate2 = (0, 86583718, 372528824, 373294451, 645684063, 112220581, 692852209, 155456985, 797128860, 90816748, 860285882, 927414960, 354738543, 109331171, 293255632, 535113200, 308540755, 121186627, 608385704, 438932459, 359477183, 824071951, 103369235, 0) rate3 = (0, 372528824, 337190230, 454590761, 816400692, 578227951, 180142363, 83780245, 6597683, 70046822, 623238099, 183021267, 402682409, 631680428, 344509872, 689220186, 365017329, 774342554, 729444058, 102986190, 128751033, 395565204, 0) irate3 = (0, 509520358, 929031873, 170256584, 839780419, 282974284, 395914482, 444904435, 72135471, 638914820, 66769500, 771127074, 985925487, 262319669, 262341272, 625870173, 768022760, 859816005, 914661783, 430819711, 272774365, 530924681, 0) def fft(a): n = len(a) h = (n - 1).bit_length() le = 0 while le < h: if h == le + 1: p = 1 rot = 1 for s in range(1 << le): offset = s << (h - le) for i in range(p): l = a[i + offset] r = a[i + offset + p] * rot a[i + offset] = (l + r) % mod a[i + offset + p] = (l - r) % mod rot *= rate2[(~s & -~s).bit_length()] rot %= mod le += 1 else: p = 1 << (h - le - 2) rot = 1 for s in range(1 << le): rot2 = rot * rot % mod rot3 = rot2 * rot % mod offset = s << (h - le) for i in range(p): a0 = a[i + offset] a1 = a[i + offset + p] * rot a2 = a[i + offset + p * 2] * rot2 a3 = a[i + offset + p * 3] * rot3 a1na3imag = (a1 - a3) % mod * imag a[i + offset] = (a0 + a2 + a1 + a3) % mod a[i + offset + p] = (a0 + a2 - a1 - a3) % mod a[i + offset + p * 2] = (a0 - a2 + a1na3imag) % mod a[i + offset + p * 3] = (a0 - a2 - a1na3imag) % mod rot *= rate3[(~s & -~s).bit_length()] rot %= mod le += 2 def fft_inv(a): n = len(a) h = (n - 1).bit_length() le = h while le: if le == 1: p = 1 << (h - le) irot = 1 for s in range(1 << (le - 1)): offset = s << (h - le + 1) for i in range(p): l = a[i + offset] r = a[i + offset + p] a[i + offset] = (l + r) % mod a[i + offset + p] = (l - r) * irot % mod irot *= irate2[(~s & -~s).bit_length()] irot %= mod le -= 1 else: p = 1 << (h - le) irot = 1 for s in range(1 << (le - 2)): irot2 = irot * irot % mod irot3 = irot2 * irot % mod offset = s << (h - le + 2) for i in range(p): a0 = a[i + offset] a1 = a[i + offset + p] a2 = a[i + offset + p * 2] a3 = a[i + offset + p * 3] a2na3iimag = (a2 - a3) * iimag % mod a[i + offset] = (a0 + a1 + a2 + a3) % mod a[i + offset + p] = (a0 - a1 + a2na3iimag) * irot % mod a[i + offset + p * 2] = (a0 + a1 - a2 - a3) * irot2 % mod a[i + offset + p * 3] = (a0 - a1 - a2na3iimag) * irot3 % mod irot *= irate3[(~s & -~s).bit_length()] irot %= mod le -= 2 def ntt(a): if len(a) <= 1: return fft(a) def ntt_inv(a): if len(a) <= 1: return fft_inv(a) iv = pow(len(a),mod-2,mod) for i in range(len(a)): a[i] = a[i] * iv % mod def convolute(a,b): aa = a[:] bb = b[:] n = len(aa) m = len(bb) if min(n,m) <= 60: return convolute_naive(a,b) z = 1 << (n + m - 2).bit_length() aa += [0] * (z - n) bb += [0] * (z - m) fft(aa) fft(bb) for i in range(z): aa[i] = aa[i] * bb[i] % mod fft_inv(aa) aa = aa[:n + m - 1] iz = pow(z, mod - 2, mod) for i in range(n+m-1): aa[i] = (aa[i] * iz) % mod return aa def convolute_naive(a,b): res = [0] * (len(a) + len(b) - 1) for i in range(len(a)): for j in range(len(b)): res[i+j] = (res[i+j] + a[i] * b[j] % mod) % mod return res N = int(input()) A = list(map(int,input().split())) def merge_convolute(P,l,r): if l + 1 == r: return [1,A[l] % mod] m = (l + r) // 2 f = merge_convolute(P,l,m) g = merge_convolute(P,m,r) h = convolute(f,g) return h F = merge_convolute(A,0,N) ans = 0 for n in range(1,N+1): ans += F[n] * pow(n,N-n,mod) % mod ans %= mod print(ans)