module app;

import core.bitop;

import std.algorithm;
import std.array;
import std.bigint;
import std.conv;
import std.stdio;
import std.string;

struct Input
{
	int h;
	int n;
	int[] a;
}

void parseInput(T)(out Input input, T file)
{
	with (file) with (input)
	{
		auto array = readln().strip().split();
        h = array[0].to!int;
        n = array[1].to!int;
        a = readln().strip().split().map!(to!int).array;
	}
}

struct Output
{
}

auto main2(Input* input)
{
    auto sum = sum(input.a);
	return input.h <= sum ? "Yes" : "No";
}

unittest { writeln("begin unittest"); }

unittest // example1
{
	string example =
`10 3
4 5 6`;
	Input input = void;
	parseExample(input, example);
	auto result = main2(&input);
	writeln(result);
	assert(result == "Yes");
}

unittest // example2
{
	string example =
`20 3
4 5 6`;
	Input input = void;
	parseExample(input, example);
	auto result = main2(&input);
	writeln(result);
	assert(result == "No");
}

unittest // example3
{
	string example =
`211 5
31 41 59 26 53`;
	Input input = void;
	parseExample(input, example);
	auto result = main2(&input);
	writeln(result);
	assert(result == "No");
}

unittest { writeln("end unittest"); }

void parseExample(out Input input, string example)
{
	struct Adapter
	{
		string[] _lines;
		this(string input) { _lines = input.splitLines(); }
		string readln() { auto line = _lines[0]; _lines = _lines[1..$]; return line; }
	}
	parseInput(input, Adapter(example));
}

void main()
{
	Input input = void;
	parseInput(input, stdin);
	auto result = main2(&input);
	writeln(result);
}
