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View Compilation Error

0_0_27249159_2362.cpp: In member function 'bool AI::operator<(const AI&) const':
0_0_27249159_2362.cpp:6:27: error: 'dcmp' was not declared in this scope
   int t = dcmp(ang - A.ang);
                           ^
0_0_27249159_2362.cpp: At global scope:
0_0_27249159_2362.cpp:9:5: error: 'N' was not declared in this scope
 } b[N];
     ^
0_0_27249159_2362.cpp:11:25: error: 'Point' was not declared in this scope
 int CircleCoveragePoint(Point *a, int n, double R)
                         ^
0_0_27249159_2362.cpp:11:32: error: 'a' was not declared in this scope
 int CircleCoveragePoint(Point *a, int n, double R)
                                ^
0_0_27249159_2362.cpp:11:35: error: expected primary-expression before 'int'
 int CircleCoveragePoint(Point *a, int n, double R)
                                   ^
0_0_27249159_2362.cpp:11:42: error: expected primary-expression before 'double'
 int CircleCoveragePoint(Point *a, int n, double R)
                                          ^
0_0_27249159_2362.cpp:11:50: error: expression list treated as compound expression in initializer [-fpermissive]
 int CircleCoveragePoint(Point *a, int n, double R)
                                                  ^
0_0_27249159_2362.cpp:12:1: error: expected ',' or ';' before '{' token
 {
 ^


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