foo.c: In function 'main':
foo.c:10:4: warning: statement with no effect [-Wunused-value]
    for(i; i < n; i++)
    ^
foo.c:8:4: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d", &n);
    ^

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

{"receive":"2020-03-31T08:43:41.776Z","handle":"2020-03-31T08:43:41.777Z","cache_start":"2020-03-31T08:43:41.790Z","read_cases":"2020-03-31T08:43:42.369Z","judge":"2020-03-31T08:43:42.371Z","done":"2020-03-31T08:43:43.007Z"}