#include<stdio.h>

#define MAX 100000

int partition(int *,int ,int );

int main(){
  int i,j,n,p,A[MAX];

  scanf("%d",&n);
  for(i=0;i<n;i++)
    scanf("%d",&A[i]);

  p = partition(A,0,n-1);

  for(i=0;i<n;i++){
    if(i == p)printf("[%d]",A[i]);
    else printf("%d",A[i]);
    if(i<n-1)printf(" ");
  }
  printf("\n");
  return 0;
}

int partition(int *A,int  p,int  r){
  int i,j,x,tmp;

  x = A[r];

  i = p-1;

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

  tmp = A[i+1];
  A[i+1] = A[r];
  A[r] = tmp;

  return i+1;
}