Var
a: array[1..15] of real;
r: real;
n, i: integer;
begin
// заполнение
for i:=1 to 15 do
begin
a[i] := i;
write(a[i], ' ');
end;
for i:=1 to 15 do
begin
r := r + a[i];
n := n + 1;
end;
r := r / n;
writeln;
writeln('Среднее ариф. ', r);
// вывод
for i := 1 to 15 do
begin
a[i] := a[i] - r;
write(a[i], ' ');
end;
end.