foo.cc: In function 'int main()':
foo.cc:13:16: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[100000]' [-Wformat=]
  scanf("%s",&s1);
             ~~~^
foo.cc:14:16: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[100000]' [-Wformat=]
  scanf("%s",&s2);
             ~~~^
foo.cc:13:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",&s1);
  ~~~~~^~~~~~~~~~
foo.cc:14:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",&s2);
  ~~~~~^~~~~~~~~~

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