#include<iostream>
using namespace std;
int main(){
	int a,b,c;
	cin>>a>>b>>c;
int r[100];
int n=0;

while(true){
	int temp;
	cin>>temp;
	if(n>=2&&temp==0&&r[n-1]==0&&r[n-2]==0){
		break;
	}
	else{
		r[n]=temp;
		n=n++;
	}
}
	int rec1,rec2,rec3;
	rec1=a*a+b*b;
	rec2=a*a+c*c;
	rec3=b*b+c*c;


	for (int i=0;i<(n-2);i++){
	 if (4*r[i]*r[i]>rec1||4*r[i]*r[i]>rec2||4*r[i]*r[i]>rec3){
		 cout<<"OK"<<endl;
	 }
	 else{
		 cout<<"NA"<<endl;
	 }
	}
return 0;

}