This is a copy of another problem.

	文件名	大小
	config.yaml	55 Bytes
	cx1.in	6.6 KiB
	cx1.out	7 Bytes
	cx2.in	48.5 KiB
	cx2.out	7 Bytes
	cx3.in	61 KiB
	cx3.out	7 Bytes
	cx4.in	67.2 KiB
	cx4.out	8 Bytes
	cx5.in	34.9 KiB
	cx5.out	7 Bytes
	cx6.in	2.6 KiB
	cx6.out	6 Bytes
	cx7.in	12 KiB
	cx7.out	7 Bytes
	cx8.in	60 KiB
	cx8.out	8 Bytes