foo.cc: In function 'int Count(Node*)':
foo.cc:280:13: warning: unused variable 'i' [-Wunused-variable]
  280 |         int i;
      |             ^
foo.cc: In function 'int main()':
foo.cc:312:27: warning: unused variable 'c' [-Wunused-variable]
  312 |     int a[10000],b[10000],c[10000];
      |                           ^
foo.cc: In function 'void remove(Node*, int, Node**)':
foo.cc:163:15: warning: 'tmp2' may be used uninitialized [-Wmaybe-uninitialized]
  163 |     tmp2->next=tmp->next;
      |     ~~~~~~~~~~^~~~~~~~~~
foo.cc:146:10: note: 'tmp2' was declared here
  146 |     Node*tmp2;
      |          ^~~~

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