#include <stdio.h>
#define N 100000

int partition(int *,int ,int );
int A[N];

int main()
{
	int i,j;
	int n,q;
	
	scanf("%d",&n);
	for(i=0;i<n;i++){
		scanf("%d",&A[i]);
	}
	q = partition(A,0,n-1);
	for(i=0;i<n;i++){
		if(i==q){
			printf("[%d] ",A[i]);
		} 
		else if(i != n-1) {
			printf("%d ",A[i]);
		}
		else {
			printf("%d",A[i]);
		}
	}
	printf("\n");
	
	return 0;
}

int partition(int *A,int p ,int r){
	int tmp;
	int i,j,x;
	
	x = A[r];
	i = p-1;
	
	for(j=0;j<r;j++){
		if(A[j] <= x){
			i++;
			tmp = A[j];
			A[j] = A[i];
			A[i] = tmp;
		}
	}
	tmp = A[r];
	A[r] = A[i+1];
	A[i+1] = tmp;
	
	return i+1;
}