var
    first, n, delta : integer;

procedure x(collected, left, ith : integer);
begin
    if left = 0 then begin
        write('n-nyj chlen = ', ith, ', summa = ', collected + ith);
        exit;
    end;
    x(collected + ith, left - 1, ith + delta);
end;

begin
    // 1-e chislo - pervyj chlen
    // 2-e chislo - raznost
    // 3-e chislo - n
    read(first, delta, n);
    x(0, n - 1, first);
end.