#include <stdio.h>
#define N 100000
int partition(int p,int r);
int A[N];
int main(){
  int i,n,c;
  scanf("%d",&n);
  for(i=0;i<n;i++) scanf("%d",&A[i]);
  c=partition(0,n-1);
  for(i=0;i<n;i++){
    if(c==i) printf("[%d] ",A[i]);
    else if(i<n-1)  printf("%d ",A[i]);
    else printf("%d",A[i]);
  }
  printf("\n");
  return 0;
}

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