#include<stdio.h>
#include<stdlib.h>

#define MAX 100000

int partition(int[],int,int);

int A[MAX];

int main(){
  int n,i,j,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-1;i++){
    if(q==i){
      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,t;

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