foo.cc: In function 'int main()':
foo.cc:9:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(int i=0; i<la; i++)
     ^~~
foo.cc:12:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  BubbleSort(a,la);
  ^~~~~~~~~~

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