(@buy @sell @repair @s_repair )
%100
+5
+6
+43
[@main]
ӭٶɽ.\ \
 </@buy>\
 </@sell>\
 </@repair>\
 </@s_repair>\
 < /@exit>\
[@buy]
Щʲô?\ \ \
 < /@Main>
[@sell]
Ҫ.\ \ \
 < /@Main>
[@repair]
Ҫ?\
Ҫ.\ \
 < /@Main>
[~@repair]
޺,ӭ´.\ \
 < /@Main>
[goods]
        10          10

