#include<stdio.h>
int main(){
    int n,x;
    int arr[n];
    scanf("%d",&n);
    for(inti=0;i<n;i++){
        scanf("%d ",arr+i);
    }
    scanf("%d",&x);
     for(int i=0;i<n;i++){
         if(x==arr[i]){
             found=1;
             continue;
         }
     }
     if(!found){
         printf("Marble not found");
     }
}