N皇后问题\backup\project1.lpi.bak .........\......\project1.pas.bak .........\in.txt .........\out.txt .........\project1.exe .........\project1.ico .........\project1.lpi .........\project1.manifest .........\project1.o .........\project1.pas .........\project1.rc .........\backup N皇后问题