foo.c: In function 'main':
foo.c:21:14: warning: implicit declaration of function 'abs' [-Wimplicit-function-declaration]
     total += abs(a[x][j] - a[i][j]);
              ^~~
foo.c:7:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &d);
  ^~~~~~~~~~~~~~~~~~~~~
foo.c:15:4: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d", &a[i][j]);
    ^~~~~~~~~~~~~~~~~~~~~

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":"2020-07-18T08:06:39.435Z","handle":"2020-07-18T08:06:39.435Z","cache_start":"2020-07-18T08:06:39.443Z","read_cases":"2020-07-18T08:06:44.690Z","judge":"2020-07-18T08:06:44.691Z","done":"2020-07-18T08:06:56.064Z"}