Eroare de compilare: user.cpp: In function ‘bool cmpA(Point, Point)’: user.cpp:17:22: error: ‘struct Point’ has no member named ‘second’ return (1LL * (a.second - A.second) * (b.first - A.first)) < (1LL * (b.second - A.second) * (a.first - A.first)); ^ user.cpp:17:46: error: ‘struct Point’ has no member named ‘first’ return (1LL * (a.second - A.second) * (b.first - A.first)) < (1LL * (b.second - A.second) * (a.first - A.first)); ^ user.cpp:17:76: error: ‘struct Point’ has no member named ‘second’ return (1LL * (a.second - A.second) * (b.first - A.first)) < (1LL * (b.second - A.second) * (a.first - A.first)); ^ user.cpp:17:100: error: ‘struct Point’ has no member named ‘first’ return (1LL * (a.second - A.second) * (b.first - A.first)) < (1LL * (b.second - A.second) * (a.first - A.first)); ^ user.cpp: In function ‘bool cmpB(Point, Point)’: user.cpp:22:22: error: ‘struct Point’ has no member named ‘second’ return (1LL * (a.second - B.second) * (b.first - B.first)) < (1LL * (b.second - B.second) * (a.first - B.first)); ^ user.cpp:22:46: error: ‘struct Point’ has no member named ‘first’ return (1LL * (a.second - B.second) * (b.first - B.first)) < (1LL * (b.second - B.second) * (a.first - B.first)); ^ user.cpp:22:76: error: ‘struct Point’ has no member named ‘second’ return (1LL * (a.second - B.second) * (b.first - B.first)) < (1LL * (b.second - B.second) * (a.first - B.first)); ^ user.cpp:22:100: error: ‘struct Point’ has no member named ‘first’ return (1LL * (a.second - B.second) * (b.first - B.first)) < (1LL * (b.second - B.second) * (a.first - B.first)); ^ user.cpp: In function ‘bool cmpC(Point, Point)’: user.cpp:27:22: error: ‘struct Point’ has no member named ‘second’ return (1LL * (a.second - C.second) * (b.first - C.first)) < (1LL * (b.second - C.second) * (a.first - C.first)); ^ user.cpp:27:46: error: ‘struct Point’ has no member named ‘first’ return (1LL * (a.second - C.second) * (b.first - C.first)) < (1LL * (b.second - C.second) * (a.first - C.first)); ^ user.cpp:27:76: error: ‘struct Point’ has no member named ‘second’ return (1LL * (a.second - C.second) * (b.first - C.first)) < (1LL * (b.second - C.second) * (a.first - C.first)); ^ user.cpp:27:100: error: ‘struct Point’ has no member named ‘first’ return (1LL * (a.second - C.second) * (b.first - C.first)) < (1LL * (b.second - C.second) * (a.first - C.first)); ^ user.cpp: In function ‘void precalcPa()’: user.cpp:42:32: error: ‘sort’ was not declared in this scope sort(P + 1, P + N + 1, cmpA); ^ user.cpp: In function ‘void precalcPc()’: user.cpp:49:32: error: ‘sort’ was not declared in this scope sort(P + 1, P + N + 1, cmpC); ^ user.cpp: In function ‘void Solve()’: user.cpp:95:32: error: ‘sort’ was not declared in this scope sort(P + 1, P + N + 1, cmpB);