foo.cc: In function 'int main()':
foo.cc:18:18: warning: 'tmp2' may be used uninitialized in this function [-Wmaybe-uninitialized]
  long long m=tmp1/tmp2;
              ~~~~^~~~~
foo.cc:18:18: warning: 'tmp1' may be used uninitialized in this function [-Wmaybe-uninitialized]

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