foo.cc: In function 'int main()':
foo.cc:9:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
     if(n==5&&k==2)
     ^~
foo.cc:11:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
  return 0;
  ^~~~~~

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