solve it by hand, convert Arduino code to flowchart

# define RLED $10$

# define YLED $9$

# define GLED $8$

void setup $()\{$

pinmode $($RLED$,$ OUTPUT$)$;

pinmode $($YLED$,$ OUTPUT$)$;

pinmode $($GLED$,$ OUTPUT$)$;

$\}$

void loop$()\{$

digitalWrite $($RLED$,$ HIGH$)$;

digitalWrite $($YLED$,$ HIGH$)$;

digitalWrite $($GLED$,$ HIGH$)$;

delay $(250)$;

digitalWrite $($RLED$,$ LOW$)$;

digitalWrite $($YLED$,$ LOW$)$;

digitalWrite $($GLED$,$ LOW$)$;

delay $(250)$;

$\}$