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;

fn main() {
	let mut flag = false;
	let mut buf = String::new();
	io::stdin().read_line(&mut buf).expect("");
	let mut iter = buf.split_whitespace();
	let h:u64 = match iter.next().unwrap().parse() {
		Ok(n) => n,
		Err(_) => panic!(""),
	};
	let n:u32 = match iter.next().unwrap().parse() {
		Ok(n) => n,
		Err(_) => panic!(""),
	};
	
	let mut sum:u64 = 0;
	
	let mut buf = String::new();
	io::stdin().read_line(&mut buf).expect("");
	let mut iter = buf.split_whitespace();
	
	for n in 0..n {
		let a: u64 = match iter.next().unwrap().parse() {
			Ok(n) => n,
			Err(_) => panic!(""),
		};
		sum = sum + a;
		if sum >= h {
			flag = true;
			break;
		}
	}
	if flag {
		println!("Yes");
	}else{
		println!("No");
	}
}