#include <stdio.h>
#define MAX 100000

int Partition(int*, int, int);

int main(){
  int i, n, x;
  int A[MAX];

  scanf("%d",&n);
  for(i=0;i<n;i++){
    scanf("%d",&A[i]);
  }
  
  x = Partition(A,0,n-1);

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

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

  for(j=p;j<r;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;
}