#include<stdio.h>
#define N 1000000
int par(int *,int ,int);
void swich(int, int);
int main()
{
  int A[N];
  int i,n,x;

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

  x = par(A,0,n-1);

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

  printf("\n");
  
  return 0;
}

int par(int *A,int p,int r){
  int x,i,j,tmp;

  x = A[r];
  i = p-1;

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

  