#include<iostream>
using namespace std;
bool solve(int k ,int a ,int b){
  for(int i=a;i<=b;i++){
    if(a%k==0){
      return true;
    }
    else{
      return false;
    }
 }
int main(){
  int k,a,b;
  cin>>k;
  cin>>a>>b;
  cout<<solve(k,a,b)?"YES":"NO";
}