#include<stdio.h>
#define N 100000

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

  y = A[i+1];
  A[i+1]=A[r];
  A[r]=y;
  return i+1;
}


int main(){
  int i,c;
  scanf("%d",&a);
  for(i=0;i<a;i++){
    scanf("%d",&A[i]);
  }
  
  c = partition(0,a-1);
  
  for(i=0;i<a-1;i++){
    if(i==c)printf("[%d] ",A[i]);
    else{
      printf("%d ",A[i]);
    }
  }
  printf("%d",A[a-1]);
  printf("\n");
  return 0;
}