use std::io::{self, Read};

fn read_stdin() -> Vec<String> {
    let mut buffer = String::new();
    io::stdin().read_to_string(&mut buffer).ok();
    buffer.trim().split('\n').map(|s| s.to_string()).collect()
}

fn main() {
    let input = read_stdin();
    let l = *&input[0].parse::<usize>().unwrap();
    let n = *&input[0].parse::<usize>().unwrap();
    let mut ws = input[2].split(' ').map(|s| s.parse::<usize>().unwrap()).collect::<Vec<usize>>();
    ws.sort();

    let mut result = 0;

    for (i, w) in ws.iter().enumerate() {
        result = result + w;
        if result > l {
            println!("{}", i);
            return
        }
    }
}