foo.cc: In function 'int main()':
foo.cc:12:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   cin >> a + 1;  
            ^

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

{"receive":"2020-03-24T13:08:02.622Z","handle":"2020-03-24T13:08:02.622Z","cache_start":"2020-03-24T13:08:02.629Z","read_cases":"2020-03-24T13:08:02.750Z","judge":"2020-03-24T13:08:02.750Z","done":"2020-03-24T13:08:04.109Z"}