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View Compilation Error

0_0_37878273_13626.cpp: In member function 'Matrix Matrix::operator*(const Matrix&)':
0_0_37878273_13626.cpp:15:20: error: no matching function for call to 'Matrix::Matrix(<brace-enclosed initializer list>)'
     Matrix res{2, 2};
                    ^
0_0_37878273_13626.cpp:15:20: note: candidates are:
0_0_37878273_13626.cpp:11:8: note: constexpr Matrix::Matrix()
 struct Matrix {
        ^
0_0_37878273_13626.cpp:11:8: note:   candidate expects 0 arguments, 2 provided
0_0_37878273_13626.cpp:11:8: note: constexpr Matrix::Matrix(const Matrix&)
0_0_37878273_13626.cpp:11:8: note:   candidate expects 1 argument, 2 provided
0_0_37878273_13626.cpp:11:8: note: constexpr Matrix::Matrix(Matrix&&)
0_0_37878273_13626.cpp:11:8: note:   candidate expects 1 argument, 2 provided
0_0_37878273_13626.cpp: In member function 'Matrix Matrix::operator+(const Matrix&)':
0_0_37878273_13626.cpp:34:20: error: no matching function for call to 'Matrix::Matrix(<brace-enclosed initializer list>)'
     Matrix res{2, 2};
                    ^
0_0_37878273_13626.cpp:34:20: note: candidates are:
0_0_37878273_13626.cpp:11:8: note: constexpr Matrix::Matrix()
 struct Matrix {
        ^
0_0_37878273_13626.cpp:11:8: note:   candidate expects 0 arguments, 2 provided
0_0_37878273_13626.cpp:11:8: note: constexpr Matrix::Matrix(const Matrix&)
0_0_37878273_13626.cpp:11:8: note:   candidate expects 1 argument, 2 provided
0_0_37878273_13626.cpp:11:8: note: constexpr Matrix::Matrix(Matrix&&)
0_0_37878273_13626.cpp:11:8: note:   candidate expects 1 argument, 2 provided


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