from functools import cache MOD=998244353 def matrix_pow(a,x): ret=[0]*36 for i in range(6): ret[i*7]=1 while x>0: if x&1: nret=[0]*36 for i in range(6): for k in range(6): for j in range(6): nret[i*6+j]+=ret[i*6+k]*a[k*6+j] nret[i*6+j]%=MOD ret=nret na=[0]*36 for i in range(6): for k in range(6): for j in range(6): na[i*6+j]+=a[i*6+k]*a[k*6+j] na[i*6+j]%=MOD a=na x>>=1 return ret @cache def dice(x): if x<0: return 0 return bostan_mori(x) q=[] Q=[1,-1,-1,-1,-1,-1,-1] for i in range(64): q.append(Q) V=[0]*(len(Q)*2-1) for i in range(len(Q)): for j in range(len(Q)): if j%2==0: V[i+j]+=Q[i]*Q[j] else: V[i+j]-=Q[i]*Q[j] V[i+j]%=MOD Q=V[0::2] def bostan_mori(N): P=[1] k=0 while N>0: U=[0]*(len(P)+6) for i in range(len(P)): for j in range(7): if j%2==0: U[i+j]+=P[i]*q[k][j] else: U[i+j]-=P[i]*q[k][j] U[i+j]%=MOD P=U[N&1::2] N>>=1 k+=1 return P[0]%MOD N,M,k=map(int,input().split()) C=list(map(int,input().split())) lst=0 for i in range(6): lst+=dice(N*M-1-i)*(6-i) lst%=MOD for c in C: matrix=[0]*36 for i in range(6): for j in range(6): if j==c: continue for k in range(6): if j+k+1>6: continue matrix[i*6+j]+=(dice(N-k-1-i)-dice(c-i)*dice(N-k-1-c)) matrix[i*6+j]%=MOD matrix=matrix_pow(matrix,M-1) ans=0 for i in range(6): for j in range(6): ans+=matrix[i]*(dice(N-j-1-i)-dice(c-i)*dice(N-j-1-c))*(6-j) ans%=MOD print((lst-ans)%MOD)