#include<stdio.h>
int main(){
    int n,found=0,arr[100];
    int *p=arr;
    scanf("%d",&n);
    for(int i=0;i<n;i++){
        scanf("%d",p+i);
    }
    int x;
    scanf("%d",&x);
    
    for(int i=0;i<n;i++){
        if(x==*(p+i)){
            found=1;
            break;
        }
    }
    if(!found){
        printf("Marble not found");
        return 0;
    }
    for(int i=o;i<n;i++){
        if(*(p+i)==x){
            continue;
        }
        printf("%d",*(p+i));
    }
    
    return 0;
}