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;
            }
        }
    }
}