Accepted
/in/foo.cc: In function 'LL Sum(int, int)':
/in/foo.cc:39:5: warning: unused variable 'ans' [-Wunused-variable]
LL ans=0;
^~~
/in/foo.cc: In function 'LL Sum(int, int)':
/in/foo.cc:39:5: warning: unused variable 'ans' [-Wunused-variable]
LL ans=0;
^~~
