/in/foo.cc: In member function 'void Tree::build_tree(int, int, int)':
/in/foo.cc:95:65: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
    no[k].nlian0 = no[k].n0 = !(no[k].l = no[k].r = no[k].nlian1 = no[k].n1 = seq[l]);
                                                    ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:280:22: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'bool*' [-Wformat=]
   scanf("%d", &seq[i]);
                      ^