#include <stdio.h>
#include <stdlib.h>
#define MAX 100000

int Partition(int [], int, int);
void Quicksort(int [], int, int);

int q;

int main(void){

  int A[MAX+1];

  int i, p, n;

  scanf("%d",&n);

  for(i=1;i<=n;i++)
    scanf("%d",&A[i]);

  p = 1;

  Quicksort(A, p, n);


  for(i=1;i< n;i++){
    if(i==q)
    printf("[%d] ",A[i]);

    else
      printf("%d ",A[i]);
  }

  printf("%d\n",A[i]);

  return 0;
}


int Partition(int A[], int p, int r){

  int i, j, x;
  int tmp;

  x = A[r];
  i = p - 1;

  for(j = p;j<r;j++){
    if(A[j] <= x){
      i = i + 1;
      tmp = A[j];
      A[j] = A[i];
      A[i] = tmp;
    }
  }
  
  tmp = A[i+1];
  A[i+1] = A[r];
  A[r] = tmp;

  return i+1;
}


void Quicksort(int A[], int p, int r){


  //if(p < r){
    q = Partition(A, p, r);
    //Quicksort(A, p, q-1);
    //Quicksort(A, q+1, r);
    //}
}