\[\boxed{\mathbf{201.}}\]
\[\textbf{а)}\ A = \left\{ 1;3 \right\} = \left\{ 2;2 \right\} = \left\{ 3;1 \right\}.\]
\[\textbf{б)}\ A = \left\{ 1;3 \right\} = \left\{ 2;3 \right\} = \left\{ 3;3 \right\} =\]
\[= \left\{ 3;2 \right\} = \left\{ 3;1 \right\}.\]