#include <bits/stdc++.h>
using namespace std;

int main()
{
int N;
int M;
int X;

	cin >> N;
	cin >> M;
	cin >> X;

	if( X >= 3 + ( N - M ) )
		cout << "YES" << endl;
	else
		cout << "NO" << endl;

	return 0;
}