var
a: array [1..25] of integer;
begin
for i: integer := 1 to 25 do
begin
a[i] := random(255);
writeln(i, ' => ', a[i]);
end;
writeln('-----------------------------------');
for i: integer := 1 to 25 do
begin
if (i mod 2 = 0) then
a[i] := a[i] * 2
else
a[i] := 0;
writeln(i, ' => ', a[i]);
end;
end.