answer.code:4:1: error: ‘P’ does not name a type
    4 | P operator-(P a,P b){
      | ^
answer.code:7:1: error: ‘P’ does not name a type
    7 | P operator/(P a,D val){
      | ^
answer.code:10:1: error: ‘D’ does not name a type
   10 | D len(P a){
      | ^
answer.code:13:1: error: ‘D’ does not name a type
   13 | D angle(P a){
      | ^
answer.code:16:1: error: ‘P’ does not name a type
   16 | P rot(P a,P ar){
      | ^
answer.code:20:1: error: ‘P’ does not name a type
   20 | P a[N];
      | ^
answer.code:21:1: error: ‘D’ does not name a type
   21 | D l[N];
      | ^
answer.code:22:1: error: ‘D’ does not name a type
   22 | D A[N],B[N],C[N];
      | ^
answer.code: In function ‘int main()’:
answer.code:25:5: error: ‘P’ was not declared in this scope
   25 |     P arg;
      |     ^
answer.code:26:5: error: ‘D’ was not declared in this scope
   26 |     D d,t;
      |     ^
answer.code:27:5: error: ‘cin’ was not declared in this scope
   27 |     cin>>n>>arg.x>>arg.y>>d>>t;
      |     ^~~
answer.code:27:13: error: ‘arg’ was not declared in this scope
   27 |     cin>>n>>arg.x>>arg.y>>d>>t;
      |             ^~~
answer.code:27:27: error: ‘d’ was not declared in this scope
   27 |     cin>>n>>arg.x>>arg.y>>d>>t;
      |                           ^
answer.code:27:30: error: ‘t’ was not declared in this scope
   27 |     cin>>n>>arg.x>>arg.y>>d>>t;
      |                              ^
answer.code:28:6: error: expected ‘;’ before ‘LEN’
   28 |     D LEN=len(arg);
      |      ^~~~
      |      ;
answer.code:29:16: error: ‘LEN’ was not declared in this scope
   29 |     arg={arg.x/LEN,-arg.y/LEN};
      |                ^~~
answer.code:31:14: error: ‘a’ was not declared in this scope
   31 |         cin>>a[i].x>>a[i].y;
      |              ^
answer.code:32:14: error: ‘rot’ was not declared in this scope
   32 |         a[i]=rot(a[i],arg);
      |              ^~~
answer.code:33:9: error: ‘A’ was not declared in this scope
   33 |         A[i]=angle(a[i]);
      |         ^
answer.code:33:14: error: ‘angle’ was not declared in this scope
   33 |         A[i]=angle(a[i]);
      |              ^~~~~
answer.code:34:9: error: ‘l’ was not declared in this scope
   34 |         l[i]=len(a[i]);
      |         ^
answer.code:34:14: error: ‘len’ was not declared in this scope
   34 |         l[i]=len(a[i]);
      |              ^~~
answer.code:35:10: error: expected ‘;’ before ‘b’
   35 |         P b={sqrt(l[i]*l[i]-d*d),d},c={-sqrt(l[i]*l[i]-d*d),d};
      |          ^~
      |          ;
answer.code:35:36: error: expected primary-expression before ‘,’ token
   35 |         P b={sqrt(l[i]*l[i]-d*d),d},c={-sqrt(l[i]*l[i]-d*d),d};
      |                                    ^
answer.code:35:37: error: ‘c’ was not declared in this scope
   35 |         P b={sqrt(l[i]*l[i]-d*d),d},c={-sqrt(l[i]*l[i]-d*d),d};
      |                                     ^
answer.code:3:29: error: expected ‘)’ before numeric constant
    3 | #define sqrt(x) sqrt(max((D)0,x))
      |                         ~   ^
answer.code:35:41: note: in expansion of macro ‘sqrt’
   35 |         P b={sqrt(l[i]*l[i]-d*d),d},c={-sqrt(l[i]*l[i]-d*d),d};
      |                                         ^~~~
answer.code:3:22: error: ‘max’ was not declared in this scope
    3 | #define sqrt(x) sqrt(max((D)0,x))
      |                      ^~~
answer.code:35:41: note: in expansion of macro ‘sqrt’
   35 |         P b={sqrt(l[i]*l[i]-d*d),d},c={-sqrt(l[i]*l[i]-d*d),d};
      |                                         ^~~~
answer.code:3:17: error: ‘sqrt’ was not declared in this scope
    3 | #define sqrt(x) sqrt(max((D)0,x))
      |                 ^~~~
answer.code:35:41: note: in expansion of macro ‘sqrt’
   35 |         P b={sqrt(l[i]*l[i]-d*d),d},c={-sqrt(l[i]*l[i]-d*d),d};
      |                                         ^~~~
answer.code:36:9: error: ‘B’ was not declared in this scope
   36 |         B[i]=angle(b);
      |         ^
answer.code:36:20: error: ‘b’ was not declared in this scope
   36 |         B[i]=angle(b);
      |                    ^
answer.code:37:9: error: ‘C’ was not declared in this scope
   37 |         C[i]=angle(c);
      |         ^