#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <algorithm>
using namespace std;

int main()
{
	int N,M,X;
	cin>>N>>M>>X;
	int uso,nokori;
	uso = N-M;
	nokori = N-X;
	if((uso==0)&&(nokori>=3)){
		cout<<"YES"<<endl;
		return 0;
	}
	else if((uso==0)&&(nokori<=2)){
		cout<<"NO"<<endl;
		return 0;
	}
	
	if((M>=nokori)&&(M>=3)){
		cout<<"YES"<<endl;
	}
	else{
		cout<<"NO"<<endl;
	}
	return 0;
}