let nk = readLine()!.split(separator: " ").map{Int($0)!}
let (n,k) = (nk[0],nk[1])
let arr = readLine()!.split(separator: " ").map{Int($0)!}
var cnt = 0
func loop(_ a: Int, _ sum: Int, _ k: Int){
    if k == 0{
        if sum % 998244353 <= sum % 998{
            cnt += 1
        }
    }else{
        for i in a...(n-k){
            loop(i+1,sum+arr[i],k-1)
        }
    }
}
loop(0,0,k)
print(cnt % 998)