/tmp/ccydjqxe.o: In function `main':
foo.cc:(.text.startup+0x6a): undefined reference to `shuru(int*, int)'
foo.cc:(.text.startup+0x78): undefined reference to `shuru(int*, int)'
collect2: error: ld returned 1 exit status

自豪的采用HydroJudge(https://github.com/hydro-dev/Hydro)进行评测。