Problem:
Score : 200 points

Problem Statement

Raccoon is fighting with a monster.

The health of the monster is H.

Raccoon can use N kinds of special moves. Using the i-th move decreases the monster's health by A_i.
There is no other way to decrease the monster's health.

Raccoon wins when the monster's health becomes 0 or below.

If Raccoon can win without using the same move twice or more, print Yes; otherwise, print No.

Constraints

1 \leq H \leq 10^9

1 \leq N \leq 10^5

1 \leq A_i \leq 10^4

All values in input are integers.

Input

Input is given from Standard Input in the following format:

H N
A_1 A_2 ... A_N

Output

If Raccoon can win without using the same move twice or more, print Yes; otherwise, print No.

Sample Input 1

10 3
4 5 6

Sample Output 1

Yes

The monster's health will become 0 or below after, for example, using the second and third moves.

Sample Input 2

20 3
4 5 6

Sample Output 2

No

Sample Input 3

210 5
31 41 59 26 53

Sample Output 3

Yes

Sample Input 4

211 5
31 41 59 26 53

Sample Output 4

No

Solution in Rust (1.15.1) (judge verdict: Accepted)

use std::io::stdin;

fn read_line() -> Vec<i32> {
    let mut a_str = String::new();
    stdin().read_line(&mut a_str).expect("read error");
    a_str.split_whitespace()
        .map(|x| x.parse::<i32>().expect("parse error"))
        .collect::<Vec<i32>>()
}

fn main() {
    let v = read_line();
    let h = v[0];
    let _n = v[1];
    let a = read_line();

    let sum = a.iter().fold(0, |sum, x| sum + x);

    if sum >= h {
        println!("Yes");
    } else {
        println!("No");
    }
}