#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>

int main(void)
{  
   int nr;   
   char buf[4096];
   
   (void) close(1);
   (void) close(2);
   while ((nr = read(0, buf, sizeof buf)) != -1 && nr != 0);
   
   return 0;
}