program SumOrDifference;

var
num1, num2, result: integer;

begin
writeln('Enter the first number: ');
readln(num1);

writeln('Enter the second number: ');
readln(num2);

if (num1 mod 2 = 0) and (num2 mod 2 = 0) then
result := num1 - num2
else
result := abs(num1) + abs(num2);

writeln('Result: ', result);
end.