import java.util.*;
 class Main{
     public static void main(String args[]){
         Scanner sc =new Scanner(System.in);
         int n =sc.nextInt();
          if(n<0){
                 System.out.print("Invalid Input");
                 return;
             }
         int ar[] = new int[n];
         for(int i=0;i<n;i++){
          if(!sc.hasNextInt()){
                 System.out.print("Invalid Input");
                 return;
             }
             ar[i] =sc.nextInt();
             if(ar[i]>100 || arr[i]<-100){
                 System.out.print("Invalid Input");
                 return;
             }
         }
         int t= sc.nextInt();
         
            for(int i=0;i<n;i++){
             if(ar[i] == t){
                 System.out.print("Found");
                 return;
             }
         }
         System.out.print("Not Found");
     }
 }