fn main() {
    let mut l = String::new();
    std::io::stdin().read_line(&mut l).expect("Failed to read L");
    let mut l: i32 = l.trim().parse().expect("Failed to parse L");
    let mut n = String::new();
    std::io::stdin().read_line(&mut n).expect("Failed to read N");
    let n: i32 = n.trim().parse().expect("Failed to parse N");
    let mut w = String::new();
    std::io::stdin().read_line(&mut w).expect("Failed to read w");
    let mut w: Vec<i32> = w.trim().split_whitespace().map(|x| x.parse::<i32>().expect("Failed to parse w")).collect::<Vec<_>>();
    w.sort_unstable();
    let mut answer = 0;
    for ww in w {
        if l - ww >= 0 {
            l -= ww;
            answer+=1;
        }
    }
    println!("{}", answer);
}