use std::{
    io::{self, BufRead},
    process::exit,
};

fn main() {
    let lines = io::stdin()
        .lock()
        .lines()
        .map(std::result::Result::unwrap)
        .collect::<Vec<_>>();

    let length = lines[0].parse::<usize>().unwrap();
    let mut widths = lines[2]
        .split(' ')
        .map(|w| w.parse::<usize>().unwrap())
        .collect::<Vec<_>>();

    widths.sort_unstable();

    let mut i = 0;
    let mut sum = 0;

    while i < widths.len() {
        sum += widths[i];
        if sum > length {
            println!("{}", i);
            exit(0);
        }
        i += 1;
    }

    println!("{}", i);
}