fn main() {
  let nk = input();
  let mut nk = nk.split(' '); 
  let n: usize = nk.next().unwrap().parse().unwrap();
  let k: usize = nk.next().unwrap().parse().unwrap();
  let a = input();
  let a: Vec<usize> = a.split(' ').map(|ai| ai.parse().unwrap()).collect();

  let mut stack = Vec::new();
  let mut s = vec![0; k];
  let mut ans = 0usize;
  for p in 0..n {
    stack.push((false, 0, 0));
    stack.push((true, 0, p));
  }
  while let Some((cf, ci, cx)) = stack.pop() {
    if cf {
      s[ci] = cx;
      if ci == k - 1 {
        let sm: usize = s.iter().map(|&xi| a[xi]).sum();
        if sm % 998244353 <= sm % 998 {
          ans += 1;
        }
      }else {
        for nx in cx+1..n {
          stack.push((false, ci + 1, 0));
          stack.push((true, ci + 1, nx));
        }
      }
    }else {
      s[ci] = 0;
    }
  }
  println!("{}", ans % 998);
}

fn input() -> String {
  let mut buffer = String::new();
  std::io::stdin().read_line(&mut buffer).unwrap();
  return buffer.trim().to_string();
}