var
a: array [1 .. 100] of integer;
i, b, n: integer;
begin
n := 20;
for i := 1 to n do
readln(a[i]);
writeln('введите B');
readln(b);
i := 1;
For i := n Downto 1 Do
a[i + 1] := a[i];
a[1] := b;
for i := 1 to n + 1 do
write(a[i]);
end.