/in/foo.cc: In function 'int main()':
/in/foo.cc:11:21: warning: 'so' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<sj<<endl<<so-1;
                     ^
/in/foo.cc:11:8: warning: 'sj' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<sj<<endl<<so-1;
        ^~