import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
while(sc.hasNextInt()) {
int num = sc.nextInt();
switch(num) {
case 200: System.out.println("OK"); break;
case 202: System.out.println("Accepted"); break;
case 400: System.out.println("Bad Request"); break;
case 403: System.out.println("Forbidden"); break;
case 404: System.out.println("Not Found"); break;
case 500: System.out.println("Internal Server Error"); break;
case 502: System.out.println("Bad Gateway"); break;
}
}
}
}