var
A, B: integer;
begin
read(A, B);
A := A xor B;
B := B xor A;
write(A, ' ', B);
end.
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Answers & Comments
var
A, B: integer;
begin
read(A, B);
A := A xor B;
B := B xor A;
A := A xor B;
write(A, ' ', B);
end.