bc round8
bc round8
Revert "bc round8"

This reverts commit 5e90c0d4ecd544bb440b2d05a40224045a7d7ad6.
Revert "bc round8"

This reverts commit 654dd0b24f85d8bcbf18cd46719f556ea0546bcc.
cf 460E
Revert "cf 460E"

This reverts commit 228d4d644606fd419d3a671f87d5e5ed27b9252f.
Merge https://github.com/zjyjer/ACM
	新文件:       bc/round8/a.cpp
	新文件:       bc/round8/b.cpp
	新文件:       bc/round8/c.cpp
	新文件:       bc/round8/d.cpp