#![allow(non_snake_case)]
#![allow(unused_imports)]
// use itertools::Itertools;
// use proconio::input;
// use proconio::marker::*;
use std::cmp::Reverse;
use std::collections::*;

fn main() {
    input! {
        T:usize,
        n:usize,
        t:[usize;n],
    }

    let mut nums = vec![0; 1 << n];
    for s in 0..1 << n {
        let mut time = 0;
        for i in 0..n {
            if s & (1 << i) != 0 {
                time += t[i];
            }
        }

        if time <= T {
            nums[s] = 1;
        }
    }

    let ans = f((1 << n) - 1, &mut nums, n);
    println!("{}", ans);
}

fn f(s: usize, nums: &mut Vec<usize>, n: usize) -> usize {
    if s == 0 {
        return 0;
    }
    if nums[s] != 0 {
        return nums[s];
    }

    let mut res = n;
    let mut t = s;
    loop {
        t = (t - 1) & s;
        if t == 0 {
            break;
        }

        res = res.min(f(t, nums, n) + f(s ^ t, nums, n));
    }

    nums[s] = res;
    nums[s]
}

mod input {
    #[macro_export]
    macro_rules! input {
        (source = $s:expr, $($r:tt)*) => {
            let mut iter = $s.split_whitespace();
            input_inner!{iter, $($r)*}
        };
        ($($r:tt)*) => {
            let 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_export]
    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)*}
        };
    }

    #[macro_export]
    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<_>>()
        };

        ($iter:expr, chars) => {
            read_value!($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")
        };
    }
}