Wrong Answer
foo.cc: In function 'int main()': foo.cc:19:7: warning: unused variable 'a' [-Wunused-variable] int a, b; ^ foo.cc:19:10: warning: unused variable 'b' [-Wunused-variable] int a, b; ^
自豪的采用HydroJudge(https://github.com/hydro-dev/Hydro)进行评测。