foo.cc: In function 'int main()':
foo.cc:5:14: warning: variable 'zh' set but not used [-Wunused-but-set-variable]
  int n,zj[3],zh[3],s[3],j[3],x[3]={1};
              ^~
foo.cc:6:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
foo.cc:8:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&s[k],&j[k]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~

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