#include <stdio.h>
#define N 1000001
 
int Partition(int, int );
int A[N];
 
int main(void){
int i,n,y;
  
 scanf("%d",&n);
 
 for(i=1;i<=n;i++){
   scanf("%d",&A[i]);
 }
  
 y=Partition(1,(n));
  
 for(i=1;i<n;i++){
 
   if (i==y){
     printf("[%d] ",A[i]);
   }
   else printf("%d ",A[i]);
 }
  
 printf("%d\n",A[n]);
  
 return 0;
  
}
 
int Partition(int p, int r){
  int i, j, x, k;
   
  x=A[r];
  i=p-1;
  for(j=p;j<=r-1;j++){
 
    if(A[j]<=x){
      i++;      
      k=A[i];
      A[i]=A[j];
      A[j]=k; 
    }
 
  }
  k=A[i+1];
  A[i + 1] = A[r];
  A[r]=k;
  return i+1;
   
}