/in/foo.cc: In function 'int main()':
/in/foo.cc:38:11: warning: unused variable 'j' [-Wunused-variable]
   38 |     LL i, j, z, now, next;
      |           ^
/in/foo.cc:38:14: warning: unused variable 'z' [-Wunused-variable]
   38 |     LL i, j, z, now, next;
      |              ^
/in/foo.cc:38:17: warning: unused variable 'now' [-Wunused-variable]
   38 |     LL i, j, z, now, next;
      |                 ^~~
/in/foo.cc:38:22: warning: unused variable 'next' [-Wunused-variable]
   38 |     LL i, j, z, now, next;
      |                      ^~~~