(@buy @sell @repair @s_repair)
%100
+10
+11
+77
+88

[@main]
ӭҪʲô\ \

 </@buy>  ·\
 </@sell>  ·\
 <޲/@repair> ·\
 </@s_repair>\
<˳/@exit>

[@buy]
ʲô·\ \ \
 </@main>

[@sell]
Ҫ·ҿһۡ\
 </@main>

[@repair]
ȥҪ޲·.\ \ \
 </@main>

[~@repair]
޲úܲ.\ \ \
 </@main>

[goods]
;Ʒ                ʱ
()        5          10
(Ů)        5          10
Ϳ()    10         10
Ϳ(Ů)    10         10
Ϳ()    10         10
Ϳ(Ů)    10         10