import collections
MOD=998244353
N,K=map(int,input().split())
A=collections.Counter(list(map(int,input().split())))
if K>10:
    exit(print(0))
dp=[[0]*11 for _ in range(1<<10)]
dp[0][0]=1
for a in A:
    s=(~a)&((1<<10)-1)
    while True:
        for i in range(10):
            dp[a|s][i+1]=(dp[a|s][i+1]+dp[s][i]*A[a])%MOD
        if s==0:
            break
        s=(s-1)&(~a)
ans=0
for i in range(1,1<<10):
    ans=(ans+dp[i][K])%MOD
print(ans)