Accepted
/in/foo.cc: In function 'int calc(const string&, const string&)':
/in/foo.cc:17:6: warning: unused variable 'ret' [-Wunused-variable]
int ret,le=a.size();
^~~
/in/foo.cc: In function 'int calc(const string&, const string&)':
/in/foo.cc:17:6: warning: unused variable 'ret' [-Wunused-variable]
int ret,le=a.size();
^~~
