#include <stdio.h>
main()
{
     int i,        /* an int in the standard input */
         after_i,  /* the int that follows i in the standard input */
         eof_flag; /* flag to signal whether EOF was encountered */

     scanf( "%d", &i );
     while ( ( eof_flag = scanf( "%d", &after_i ) ) != EOF )
          if ( i > after_i ) /* order OK? */
               break;        /* if not, terminate loop */
          else               /* if so, update i & check next pair */
               i = after_i;

     if ( eof_flag != EOF )
          printf( "\nfile is not sorted\n" );
     else
          printf( "\nfile is sorted\n" );
}