宽度优先搜索-八数码
...................\Debug
...................\.....\vc60.idb
...................\.....\vc60.pdb
...................\.....\WFS.exe
...................\.....\WFS.ilk
...................\.....\WFS.obj
...................\.....\WFS.pch
...................\.....\WFS.pdb
...................\WFS.cpp
...................\WFS.dsp
...................\WFS.dsw
...................\WFS.ncb
...................\WFS.opt
...................\WFS.plg