#include <climits>
#include <cstdio>
#include <cstdlib>
-#include <cstdlib>
#include <cstring>
#include <fcntl.h>
#include <getopt.h>
#endif
#include <sys/stat.h>
#include <sys/types.h>
-#include <sys/types.h>
-#include <sys/types.h>
#include <unistd.h>