macro_rules! scan_iter {
    ($buf:expr) => {{
        use std::io::{stdin, BufRead};
        use std::str::FromStr;

        $buf.clear();
        stdin().lock().read_line(&mut $buf).unwrap();
        $buf.trim()
            .split(" ")
            .map(|x| FromStr::from_str(x).unwrap())
    }};
}

macro_rules! scan_vec {
    ($buf:expr) => {
        scan_iter!($buf).collect::<Vec<_>>()
    };
}

macro_rules! scan {
    ($buf:expr) => {{
        use std::io::{stdin, BufRead};
        use std::str::FromStr;

        $buf.clear();
        stdin().lock().read_line(&mut $buf).unwrap();
        FromStr::from_str($buf.trim()).unwrap()
    }};
}

macro_rules! ignore {
    () => {{
        use std::io::{stdin, BufRead};

        stdin().lock().read_line(&mut String::new()).unwrap();
    }};
}

fn main() {
    let mut b = String::new();

    let l: i32 = scan!(b);
    ignore!();
    let w: Vec<i32> = {
        let mut w = scan_vec!(b);
        w.sort_unstable();
        w
    };

    let mut cap = l;
    let mut count = 0;
    for b in w {
        if cap < b {
            break;
        }
        cap -= b;
        count += 1;
    }

    println!("{count}");
}