#include <stdio.h>
#include <stdlib.h>
#define MAX 100000

int partition(int,int);

int A[MAX];

int main(){
int i,n,k;

scanf("%d",&n);
if(n > 100000) exit(2);
for(i = 0; i < n ; i++){
  scanf("%d",&A[i]);
}

k = partition(0,n - 1);

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

  return 0;
}

int partition(int p,int r){
  int i,j,x,z;
  x = A[r];
  i = p - 1;
  for(j = p; j < r ; j++){
    if(A[j] <= x){
      i++;
      z = A[i];
      A[i] = A[j];
      A[j] = z;
    }
  }
  z = A[i + 1];
  A[i + 1] = A[r];
  A[r] = z;

  return i + 1;
}

