foo.cc: In function 'int read()':
foo.cc:18:5: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
     while(ch=getchar(),!isdigit(ch)) if(ch=='-') f=-1;x=(ch^48);
     ^~~~~
foo.cc:18:55: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'while'
     while(ch=getchar(),!isdigit(ch)) if(ch=='-') f=-1;x=(ch^48);
                                                       ^

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

{"receive":"2020-07-14T01:30:13.590Z","handle":"2020-07-14T01:30:13.590Z","cache_start":"2020-07-14T01:30:13.604Z","read_cases":"2020-07-14T01:30:13.718Z","judge":"2020-07-14T01:30:13.719Z","done":"2020-07-14T01:30:17.360Z"}