foo.cc: In function 'int main()':
foo.cc:48:13: error: cannot convert 'int (*)[100]' to 'int (*)[10]' for argument '1' to 'void Output(int (*)[10], int)'
  Output(a, n);
             ^

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