#include <iostream>
#include <string>
using namespace std;

int main(){
	int a;
	int b;
	int c;
	int t1 = 0;
	int t2 = 0;
	int cnt1 = 0;
	int cnt2 = 0;
	cin >> a;
	cin >> b;
	cin >> c;
	while (a > t1){
		cnt1 += 1;
		t1 += b;
	}
	while (a > t2){
		cnt2 += 1;
		t2 += c;
	}

	if ((cnt1*2)/ 3 >= cnt2){
		cout << "YES" << endl;
	}
	else{
		cout << "NO" << endl;
	}

	return 0;
}