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