<span>(x*!y+z)(!x+y)+!z =
= </span>x*!y*<span>(!x+y)+z*(!x+y)+!z =
</span>= x*!y*!x+<span><span><span><span>x*!y*</span>y+z*(!x+y)+!z =
</span></span></span><span>x*!y*!x = 0</span>
<span>x*!y*y = 0
</span>= <span>z*(!x+y)+!z</span>
Fortif-типо токого,как то так
<span>arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] <span># Заполняем элементами массив
</span>for i in range(len(arr)):
if i % 2 == 0:
print(arr[i])</span>
Var s:string;i:integer;
begin
i:=1; read(s);
while i<=length(s) do if (s[i]<'0') or (s[i]>'9') then delete(s,i,1) else i:=i+1;
write(s)
<span>end.</span>