foo.cc: In function 'int main()':
foo.cc:15:13: warning: unused variable 'd' [-Wunused-variable]
  int c[200],d[200];
             ^
foo.cc: In function 'int Paixu(int*, int)':
foo.cc:49:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

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