#include<stdio.h>

#define N 100001

int Partition(int A[],int p,int r);

int main(){
  int A[N];
  int n,i,q;
  
  scanf("%d",&n);
  
  for(i = 0 ; i < n ; i++) scanf("%d",&A[i]);
  
  q = Patition(A,0,n-1);
  
  for(i=0;i<n;i++){
    if(i == q){
      printf("[%d] ",A[i]);
    } else if(i != n-1) {
      printf("%d ",A[i]);
    }
    else printf("%d",A[i]);
  }
  printf("\n");
  
  return 0;
}

int Partition(int A[],int p,int r){
  int i,j,x,y,z;
  
  x = A[r]; 
  i = p - 1;

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