#include <stdio.h>

int Partition(int*,int,int); 

main(){
  int n;
  int i,a,A[100001];
  scanf("%d",&n);
  for(i=0;i<n;i++){
    scanf("%d",&A[i]);
  }

  a = Partition(A,0,n-1);

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

  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;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;
}