true 4 5 decimal $mn2fmatrixresultmnmatrix\leftarrow j1\leftarrow jm\le jj1+\leftarrow k1\leftarrow kn\le kk1+\leftarrow resultjkeljkf\leftarrow forforresult31line\leftarrow$ $jkfxjkel\leftarrow$ $22jkfmatrixx11elx12elx21elx22el22mat$ $jkfyjkel\leftarrow$ $101jkfmatrixy11ely21ely31ely41ely51ely61ely71ely81ely91ely101el101mat$