#![allow(unused_parens)]
#![allow(unused_imports)]
#![allow(non_upper_case_globals)]

#[allow(unused_macros)]
macro_rules! invec {
    ( $ t : ty ) => {{
        let mut s = String::new();
        match std::io::stdin().read_line(&mut s) {
            Ok(0) => Vec::<$t>::new(),
            Ok(n) => s
                .trim()
                .split_whitespace()
                .map(|s| s.parse::<$t>().unwrap())
                .collect::<Vec<$t>>(),
            Err(_) => Vec::<$t>::new(),
        }
    }};
}

#[allow(unused_macros)]
macro_rules! get {
      ($t:ty) => {
          {
              let mut line: String = String::new();
              std::io::stdin().read_line(&mut line).unwrap();
              line.trim().parse::<$t>().unwrap()
          }
      };
      ($($t:ty),*) => {
          {
              let mut line: String = String::new();
              std::io::stdin().read_line(&mut line).unwrap();
              let mut iter = line.split_whitespace();
              (
                  $(iter.next().unwrap().parse::<$t>().unwrap(),)*
              )
          }
      };
      ($t:ty; $n:expr) => {
          (0..$n).map(|_|
              get!($t)
          ).collect::<Vec<_>>()
      };
      ($($t:ty),*; $n:expr) => {
          (0..$n).map(|_|
              get!($($t),*)
          ).collect::<Vec<_>>()
      };
      ($t:ty ;;) => {
          {
              let mut line: String = String::new();
              std::io::stdin().read_line(&mut line).unwrap();
              line.split_whitespace()
                  .map(|t| t.parse::<$t>().unwrap())
                  .collect::<Vec<_>>()
          }
      };
      ($t:ty ;; $n:expr) => {
          (0..$n).map(|_| get!($t ;;)).collect::<Vec<_>>()
      };
}

#[allow(unused_macros)]
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let mut s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};

    ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($iter, $t);
        input_inner!{$iter $($r)*}
    };
}

#[allow(unused_macros)]
macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };

    ($iter:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
    };

    ($next:expr, [$t:tt]) => {
        {
            let len = read_value!($next, usize);
            (0..len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
        }
    };
    ($iter:expr, chars) => {
        read_value!($iter, String).chars().collect::<Vec<char>>()
    };

    ($iter:expr, usize1) => {
        read_value!($iter, usize) - 1
    };

    ($iter:expr, $t:ty) => {
        $iter.next().unwrap().parse::<$t>().expect("Parse error")
    };
}

#[cfg(debug_assertions)]
macro_rules! mydbg {
    //($arg:expr) => (dbg!($arg))
    //($arg:expr) => (println!("{:?}",$arg));
      ($($a:expr),*) => {
          eprintln!(concat!($(stringify!($a), " = {:?}, "),*), $($a),*);
      }
}
#[cfg(not(debug_assertions))]
macro_rules! mydbg {
    ($($arg:expr),*) => {};
}

use std::cmp;
use std::collections::HashMap;

#[allow(dead_code)]
static INF_I64: i64 = 9223372036854775807;
#[allow(dead_code)]
static INF_I32: i32 = 2147483647;
#[allow(dead_code)]
static INF_USIZE: usize = 18446744073709551615;

pub struct Combination {
    cache: Vec<Vec<usize>>,
    max: usize,
}
impl Combination {
    pub fn new(max: usize) -> Self {
        let mut c = vec![vec![0; max + 1]; max + 1];
        let mut c = Combination {
            cache: c,
            max: max + 1,
        };

        c.calc();
        return c;
    }
    fn calc(&mut self) {
        self.cache[0][0] = 1;
        for i in 1..self.max {
            for j in 0..i + 1 {
                self.cache[i][j] += self.cache[i - 1][j];
                if j > 0 {
                    self.cache[i][j] += self.cache[i - 1][j - 1];
                }
            }
        }
    }
    fn get(&mut self, n: usize, k: usize) -> usize {
        return self.cache[n][k];
    }
}

fn comb(n: usize, k: usize) -> usize {
    let mut k = k;
    k = std::cmp::min(k, n - k);
    if k == 0 {
        return 1;
    } else {
        return comb(n - 1, k - 1) * n / k;
    }
}

fn main() {
    input! {
       n: usize,
       a: usize,
       b: usize,
       v:[usize;n],
    }

    let mut ans = 0.0;
    let mut v = v;
    v.sort();
    v.reverse();
    mydbg!(a, b, v);

    let mut flag = true;
    let mut t = v[0];
    for i in 0..a {
        ans += v[i] as f64;
        if t != v[i] {
            flag = false;
        }
    }

    ans = ans / (a as f64);
    let mut ans2 = 0;

    let mut cmb = Combination::new(50);
    mydbg!(flag);
    if flag {
        let mut k = 0;
        for i in 0..n {
            if v[i] != v[0] {
                break;
            } else {
                k += 1;
            }
        }
        mydbg!(k, a);
        for i in a..b + 1 {
            ans2 += cmb.get(k, i);
        }
    } else {
        let mut k = 0;
        let mut l = 0;
        for i in (0..a).rev() {
            if v[a - 1] != v[i] {
                break;
            } else {
                k += 1;
            }
        }
        for i in a..n {
            if v[i] != v[a - 1] {
                break;
            } else {
                l += 1;
            }
        }
        l += k;
        mydbg!(l, k);
        ans2 = cmb.get(l, k);
    }

    println!("{}", ans);
    println!("{}", ans2);
}


Measured memory_bytes: 4352