import java.util.Scanner;
public class Kattis {
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
sc.nextLine();
String []arr = sc.nextLine().split(" ");
boolean idk = false;
for (int i = 0; i < arr.length; i++) {
if(arr[i].equals("mumble") || arr[i].equals(Integer.toString(i+1)))
continue;
idk = true;
}
String result = idk ? "something is fishy" : "makes sense";
System.out.println(result);
}
}