Wrong Answer
/in/foo.cc: In function 'int main()':
/in/foo.cc:79:13: warning: 'sum' may be used uninitialized in this function [-Wmaybe-uninitialized]
output(sum);
^
/in/foo.cc: In function 'int main()':
/in/foo.cc:79:13: warning: 'sum' may be used uninitialized in this function [-Wmaybe-uninitialized]
output(sum);
^
