foo.cc: In function 'int main()':
foo.cc:13:2: warning: 't' may be used uninitialized in this function [-Wmaybe-uninitialized]
 j=t-1;
 ~^~~~

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

{"receive":"2020-07-11T18:47:20.930Z","handle":"2020-07-11T18:47:20.930Z","cache_start":"2020-07-11T18:47:20.937Z","read_cases":"2020-07-11T18:47:21.057Z","judge":"2020-07-11T18:47:21.057Z","done":"2020-07-11T18:47:21.387Z"}