/in/foo.cc: In function 'int Count(Node*)':
/in/foo.cc:280:6: warning: unused variable 'i' [-Wunused-variable]
  int i;
      ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:352:27: warning: unused variable 'c' [-Wunused-variable]
     int a[10000],b[10000],c[10000];
                           ^
/in/foo.cc: In function 'void remove(Node*, int, Node**)':
/in/foo.cc:163:15: warning: 'tmp2' may be used uninitialized in this function [-Wmaybe-uninitialized]
     tmp2->next=tmp->next;
     ~~~~~~~~~~^~~~~~~~~~
/in/foo.cc: In function 'void Unique(Node*, Node**)':
/in/foo.cc:163:15: warning: 'tmp2' may be used uninitialized in this function [-Wmaybe-uninitialized]
     tmp2->next=tmp->next;
     ~~~~~~~~~~^~~~~~~~~~
/in/foo.cc:146:10: note: 'tmp2' was declared here
     Node*tmp2;
          ^~~~