foo.cc: In function 'void read(ll&)':
foo.cc:16:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for (x=0;c<='9'&&c>='0';c=getchar()) x=x*10+(c&15);x*=f;
  ^~~
foo.cc:16:53: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  for (x=0;c<='9'&&c>='0';c=getchar()) x=x*10+(c&15);x*=f;
                                                     ^

自豪的采用jd5进行评测(github.com/masnn/jd5)

{"receive":"2020-02-27T17:09:01.735Z","handle":"2020-02-27T17:09:01.735Z","cache_start":"2020-02-27T17:09:01.735Z","read_cases":"2020-02-27T17:09:02.117Z","judge":"2020-02-27T17:09:02.122Z","done":"2020-02-27T17:09:03.224Z"}