foo.cc: In function 'void dfs(int, int)':
foo.cc:62:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   if((i+1)%3!=1)
   ^~
foo.cc:63:22: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
    swap(a[i],a[i+1]);dfs(dep+1,CT()),swap(a[i],a[i+1]);
                      ^~~
foo.cc:60:6: warning: unused variable 'f' [-Wunused-variable]
  int f;
      ^

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

{"receive":"2020-08-11T11:45:31.488Z","handle":"2020-08-11T11:45:31.488Z","cache_start":"2020-08-11T11:45:31.509Z","read_cases":"2020-08-11T11:45:31.669Z","judge":"2020-08-11T11:45:31.672Z","done":"2020-08-11T11:45:33.204Z"}