/in/foo.cc: In function 'int main()':
/in/foo.cc:24:35: warning: 'x' may be used uninitialized [-Wmaybe-uninitialized]
   24 |                         ans = ans * x % P;
      |                               ~~~~^~~
/in/foo.cc:18:29: note: 'x' was declared here
   18 |                         int x;
      |                             ^