/in/foo.cc: In function 'int main()':
/in/foo.cc:12:11: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<cnt;
           ^
/in/foo.cc: In function 'int bshws(int)':
/in/foo.cc:32:9: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
  return ans;
         ^~~