foo.cc: In function 'void MAIN()':
foo.cc:56:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for (int i=t;i>=0;i--) printf("%d",d[i]); printf("\n");
     ^~~
foo.cc:56:47: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
     for (int i=t;i>=0;i--) printf("%d",d[i]); printf("\n");
                                               ^~~~~~
foo.cc:42:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s %s",s1,s2); int N = strlen(s1), M = strlen(s2);
     ~~~~~^~~~~~~~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:60:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  int T; scanf("%d",&T);
         ~~~~~^~~~~~~~~

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

{"receive":"2020-05-24T03:45:28.062Z","handle":"2020-05-24T03:45:28.062Z","cache_start":"2020-05-24T03:45:28.069Z","read_cases":"2020-05-24T03:45:28.187Z","judge":"2020-05-24T03:45:28.190Z","done":"2020-05-24T03:45:32.875Z"}