foo.cc: In function 'int main()':
foo.cc:102:21: warning: format '%lld' expects argument of type 'long long int*', but argument 2 has type 'int*' [-Wformat=]
     scanf("%lld", &m);
                   ~~^
foo.cc:86:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld", &n);
     ~~~~~^~~~~~~~~~~~
foo.cc:89:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld", &t);
         ~~~~~^~~~~~~~~~~~
foo.cc:102:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld", &m);
     ~~~~~^~~~~~~~~~~~
foo.cc:107:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld%lld", &u, &k);
         ~~~~~^~~~~~~~~~~~~~~~~~~~

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

{"receive":"2020-08-07T06:40:16.680Z","handle":"2020-08-07T06:40:16.680Z","cache_start":"2020-08-07T06:40:16.687Z","read_cases":"2020-08-07T06:40:16.792Z","judge":"2020-08-07T06:40:16.793Z","done":"2020-08-07T06:40:18.395Z"}