foo.cc: In function 'int main()':
foo.cc:21:14: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
              if(orz[i]=='O'&&orz[j]=='R'&&orz[k]=='Z')
              ^~
foo.cc:22:25: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
                  ans++; cout<<ans;
                         ^~~~
foo.cc:16:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",orz);
  ~~~~~^~~~~~~~~~

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