#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MEM (200 * 1024 * 1024)
#define CHUNK (127 * 1024)

void *p[MEM/CHUNK + 1];

int main()
{
  int i;

  for (i = 0; i < MEM/CHUNK; i++)
    {
      p[i] = malloc(CHUNK);
      memset (p[i], 0x83, CHUNK);
    }
  fgetc(stdin);
  printf("freeing odd ones\n");
  for (i = 1; i < MEM/CHUNK; i += 2)
    free (p[i]);
  fgetc(stdin);

  printf("freeing even ones\n");
  for (i = 0; i < MEM/CHUNK; i += 2)
    free (p[i]);
  fgetc(stdin);

  return 0;
}