Wrong Answer
foo.cc: In function 'bool is_palindrome(int)':
foo.cc:38:16: warning: 'a[0]' may be used uninitialized in this function [-Wmaybe-uninitialized]
if (a[p] != a[q]) {
~~~^
[Hydro](https://hydro.ac)提供评测服务
foo.cc: In function 'bool is_palindrome(int)':
foo.cc:38:16: warning: 'a[0]' may be used uninitialized in this function [-Wmaybe-uninitialized]
if (a[p] != a[q]) {
~~~^
[Hydro](https://hydro.ac)提供评测服务
