#include <stdio.h>

#define N 100001

int partition(int *, int, int);

int main () {
  int A[N], i, n = 0, p = 0;

  scanf("%d",&n);

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

  p = partition(A, 1, n);

  for(i = 1 ; i <= n ; i++) {
    if(i == p) printf("[%d] ",A[i]);
    else if(i < n) printf("%d ",A[i]);
    else printf("%d\n",A[i]);
  }

  return 0;
}


int partition(int *A, int p, int r) {
  int i, j, x = 0, tmp = 0;

  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;
}

