Add working solution 6.
LZCS-G580-WIN8|MINGW32-Git
Add a working solution of 7. Note that this solution won't pass the check due to the output order, but it is a working solution.
LZCS-G580-WIN8|MINGW32-Git
Add a fully working solution of 7. This passes the check.
LZCS-G580-WIN8|MINGW32-Git
Add official solution 8.
LZCS-G580-WIN8|MINGW32-Git
Add solution 9, which looks a bit nicer than official solution.
LZCS-G580-WIN8|MINGW32-Git
Add perfect solution 10.
LZCS-G580-WIN8|MINGW32-Git
Add solution 11. Note that by changing 'concat' to 'push'
will break it from passing. Not sure why.
LZCS-G580-WIN8|MINGW32-Git