/in/foo.cc: In function 'int main()':
/in/foo.cc:27:37: warning: 'R' may be used uninitialized in this function [-Wmaybe-uninitialized]
  double ANS=(double)(SUM)/(double)(R-L+1);
                                    ~^~
/in/foo.cc:28:15: warning: 'L' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout << L << " " << R << " ";
               ^~~