add the poj 2488 test data
add poj 2488 and no AC
add 2488(no ac)
add trace category and eight queen problem
use trace algorithm but no ac and need to debug
add the poj 2488 output test data
correct for dictionary order and the output format. no ac
update the poj 2488 test data
renaming the directory(trace) to backtrace
create directory classic that placed a lot of classic problem
the poj 2488 solution existed problem and I keep this solution compare with next correct solution
update the poj 2488 test data
modified poj 1573
add the poj 1005 test data
add poj 1005 and ac
add poj 2488 and ac
add 2488 and 1005