tri.cpp: In function 'bool comp(int, int)':
tri.cpp:8:33: error: 'is_clockwise' was not declared in this scope
8 | bool comp(int a, int b) {return is_clockwise(1,a,b);}
| ^~~~~~~~~~~~
tri.cpp: In function 'void add(int)':
tri.cpp:11:29: error: 'is_clockwise' was not declared in this scope
11 | while (dq.size()>=2 && !is_clockwise(dq[dq.size()-2],dq[dq.size()-1],x)) dq.pop_back();
| ^~~~~~~~~~~~
tri.cpp: In function 'int main()':
tri.cpp:17:7: error: 'get_n' was not declared in this scope
17 | n=get_n();
| ^~~~~
tri.cpp:19:13: error: 'is_clockwise' was not declared in this scope
19 | if (is_clockwise(1,2,i)) down.push_back(i);
| ^~~~~~~~~~~~
tri.cpp:34:5: error: 'give_answer' was not declared in this scope
34 | give_answer(dq.size());
| ^~~~~~~~~~~