import collections,sys,math,functools,operator,itertools,bisect,heapq,decimal,string,time,random #sys.setrecursionlimit(10**9) #sys.set_int_max_str_digits(0) #input = sys.stdin.readline #n = int(input()) # #alist = [] input = sys.stdin.readline n,m,k = map(int,input().split()) c = list(map(int,input().split())) dp = [0 for i in range(n*m+10)] mod = 998244353 dp[0] = 1 for i in range(len(dp)): for j in range(1,7): if i+j < len(dp): dp[i+j] += dp[i] dp[i+j] %= mod #print(dp) for i in c: ans = 0 for j in range(6): ans += dp[n*m-i-1-j] * dp[i] * (6-j) #print(i,n*m-i-1-j) #pri#nt(ans) for j in range(6): if n*m-i-1-j-n < 0: continue ans += dp[n*m-i-1-j-n] * dp[i+n]* (6-j) #print(i+n,n*m-i-1-j-n) #print(ans) for j in range(6): if n*m-i-1-j-n < 0: continue ans -= dp[i] * dp[n] * dp[n*m-i-1-j-n]* (6-j) #print(i,n,n*m-i-1-j-n) #print(ans) print(ans%mod)