#include<stdio.h>
#define MAX 100001

int Partition(int*,int,int);

int main(void){
  int i,n,p,q;
  int 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 if(i==n-1) printf("%d\n", A[i]);
    else printf("%d ", A[i]);
  }

  return 0;
}

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

  x=A[r];

  i=p-1;
  for(j=p;j<=r-1;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;

}