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