using namespace std;
int main(){
	int a,b,c;
	cin>>a>>b>>c;
	if(a>b && b>c){
  		cout<<"YES";
  	}
  	else{
  		cout<<"NO";
  	}
  return 0;
}

using namespace std;
int main()
{
  int a,b,c;
  cin>>a>>b>>c;
  if(a>b and b>c){
  	cout<<"YES"<<endl;
  }else{
  	cout<<"NO"<<endl;
  }
  return 0;
}

c++不能连续比较，好拉啊