Fix 1993/plummer - check args

1993/plummer/README.md

@@ -13,17 +13,6 @@ make all
 ```
 
 
-### Bugs and (Mis)features
-
-The current status of this entry is:
-
-```
-STATUS: known bug - please help us fix
-```
-
-For more detailed information see [1993 plummer in bugs.md](/bugs.md#1993-plummer).
-
-
 ## To use:
 
 ```sh
@@ -69,11 +58,6 @@ make clobber CDEFINE="-DZ=50" alt
 ./plummer.alt xyzzyzzyx 5555
 ```
 
-### INABIAF - it's not a bug it's a feature :-)
-
-This entry will very likely crash or do something else if you run it without
-enough args.
-
 
 ## Judges' remarks:
 

1993/plummer/plummer.alt.c

@@ -1 +1 @@
-char*_,*O;main(S,l)char**l;{*(O=*(l+++S-1)-1)=13,*l[1]=0;for(;;)for(printf(*l),_=O-1,usleep(Z);_>=*l&&++*_>(S+*O+S)*S;*_--=(S+*O)*S);}
+char*_,*O;main(S,l)char**l;{if(S<3)exit(1);*(O=*(l+++S-1)-1)=13,*l[1]=0;for(;;)for(printf(*l),_=O-1,usleep(Z);_>=*l&&++*_>(S+*O+S)*S;*_--=(S+*O)*S);}

1993/plummer/plummer.c

@@ -1 +1 @@
-char*_,*O;main(S,l)char**l;{*(O=*(l+++S-1)-1)=13,*l[1]=0;for(;;)for(printf(*l),_=O-1;_>=*l&&++*_>(S+*O+S)*S;*_--=(S+*O)*S);}
+char*_,*O;main(S,l)char**l;{if(S<3)exit(1);*(O=*(l+++S-1)-1)=13,*l[1]=0;for(;;)for(printf(*l),_=O-1;_>=*l&&++*_>(S+*O+S)*S;*_--=(S+*O)*S);}