#include<stdio.h>
#include<string.h>
int main(){
    int N;
    scanf("%d",&N);
    if(n<1||n>10){
        printf("Invalid Input");
        return 0;
    }
    int arr[10];
    for(int i=0;i<n;i++){
        scanf("%d",&arr[i])
        if(arr[i]<0||arr[i]>9){
            printf("Invalid Input");
        }
    }
}
int threshold;
scanf("%d",&threshold);
if(threshold<=0||threshold>9){
    printf("Invalid Input");
    return 0;
}
for(int i=0;i<N;i++){
    if(arr[i]<threshold){
        printf("%d",arr[i]);
    }
}
for(int i=0;i<N;i++){
    if(arr[i]==threhshold){
        printf("%d",arr[i]);
    }
}
return 0;
}