#include<stdio.h>

int Partition(int*,int,int);
int n;
int main(){

  int A[100001],i,m;

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

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

  for(i=0;i<n-1;i++){
    if(i==m)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 x,i,j,tmp;

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

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