#include<stdio.h>
int partition(int *,int ,int);
int main(){
  int i,n,A[100000],q;
  scanf("%d",&n);
  for(i=0;i<n;i++){
    scanf("%d",&A[i]);
    q=partition(A,0,n-1);
    printf("%d\n",A[i]);
  }
  // printf("%d",)                                                              
  for(i=0;i<n;i++){
    if(i)printf(" ");
    if(i==q) printf("[");
    printf("%d",A[i]);
    if(i==q) printf("]");
   }
  printf("\n");
  return 0;
}
int partition(int *A,int p,int r){
  int tmp,x,i,j;
  x = A[r];
  i = p-1;
  for(j=p;j<=r-1;j++){
    if (A[j]<=x){
      i=i+1;
      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;
}



