foo.cc: In function 'int main()':
foo.cc:11:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=1; i<l; i++){
                    ^
foo.cc:15:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0; i<l; i++){
                    ^

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

正在同步测试数据，请稍后
{"receive":"2020-07-04T08:15:17.861Z","handle":"2020-07-04T08:15:17.861Z","cache_start":"2020-07-04T08:15:17.868Z","read_cases":"2020-07-04T08:15:18.584Z","judge":"2020-07-04T08:15:18.585Z","done":"2020-07-04T08:15:20.457Z"}