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View Compilation Error

0_0_38177394_17961.cpp: In member function 'std::tuple<int, C, L> C::inverse(const L&) const':
0_0_38177394_17961.cpp:83:48: error: converting to 'std::tuple<int, C, L>' from initializer list would use explicit constructor 'constexpr std::tuple< <template-parameter-1-1> >::tuple(_UElements&& ...) [with _UElements = {int, const C&, const L&}; <template-parameter-2-2> = void; _Elements = {int, C, L}]'
         if (l.ori(c) == 0) return {2, null_c, l};
                                                ^
0_0_38177394_17961.cpp:87:48: error: converting to 'std::tuple<int, C, L>' from initializer list would use explicit constructor 'constexpr std::tuple< <template-parameter-1-1> >::tuple(const _Elements& ...) [with _Elements = {int, C, L}]'
         return {1, {(c + p) / 2, d / 2}, null_l};
                                                ^
0_0_38177394_17961.cpp: In member function 'std::tuple<int, C, L> C::inverse(const C&) const':
0_0_38177394_17961.cpp:97:48: error: converting to 'std::tuple<int, C, L>' from initializer list would use explicit constructor 'constexpr std::tuple< <template-parameter-1-1> >::tuple(const _Elements& ...) [with _Elements = {int, C, L}]'
             return {2, null_c, {p, {-v.y, v.x}}};
                                                ^
0_0_38177394_17961.cpp:99:58: error: converting to 'std::tuple<int, C, L>' from initializer list would use explicit constructor 'constexpr std::tuple< <template-parameter-1-1> >::tuple(const _Elements& ...) [with _Elements = {int, C, L}]'
         if (c == a.c) return {1, {c, r * r / a.r}, null_l};
                                                          ^
0_0_38177394_17961.cpp:103:55: error: converting to 'std::tuple<int, C, L>' from initializer list would use explicit constructor 'constexpr std::tuple< <template-parameter-1-1> >::tuple(const _Elements& ...) [with _Elements = {int, C, L}]'
         return {1, {(p + q) / 2, p.dis(q) / 2}, null_l};
                                                       ^


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