BoxFighter

这个比赛，兄弟最后最高分到了多少呀？

On ubuntu18.04，make xdp error

2

Input： `make xdp` output： `clang -I /lib/modules/5.4.0-73-generic/build/arch/x86/include -I /lib/modules/5.4.0-73-generic/build/arch/x86/include/generated/uapi -I /lib/modules/5.4.0-73-generic/build/arch/x86/include/generated -I /lib/modules/5.4.0-73-generic/build/include -I /lib/modules/5.4.0-73-generic/build/arch/x86/include/uapi -I /lib/modules/5.4.0-73-generic/build/include/uapi -include /lib/modules/5.4.0-73-generic/build/include/linux/kconfig.h -I /lib/modules/5.4.0-73-generic/build/include/generated/uapi -D__KERNEL__ -D__ASM_SYSREG_H -Wunused -Wall -Wno-compare-distinct-pointer-types -fno-stack-protector -Wno-pointer-sign -O2 -S...