#include <stdio.h>

#define N 100000

int A[N],q;

int Partition(int ,int);
void Print(int n);

main(){
  
  int i,n=0,p=0,r=0;
 
  scanf("%d",&n);
  
  if(N < n || n < 0) return 0;
  
  r = n-1;
  
  for(i=0;i < n;i++){
    scanf("%d",&A[i]);
  }
  
  q = Partition(p,r);
  
  Print(n);
  
  return 0;
}

Partition(int p,int r){
  int x=0,j;
  x = A[r];
  int i = p-1;
  int tmp=0;
  
  for(j=p;j <= r-1;j++){
    if(A[j] <= x){
      i=i+1;
      tmp = A[j];
      A[j] = A[i];
      A[i] = tmp;
    }
  }
  tmp =0;
  tmp = A[i+1];
  A[i+1] = A[r];
  A[r] = tmp;
  
  return i+1;
}

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