program f3;
var A, B, i, count: integer;
begin
read(A, B);
for i := B - 1 downto A + 1
do write(i, ' ');
count := (B - 1) - (A + 1) + 1;
writeln;
write( 'Количество чисел - ', count);
end.
program f3;
var A, B, i, count: integer;
begin
read(A, B);
for i := B - 1 downto A + 1
do write(i, ' ');
count := (B - 1) - (A + 1) + 1;
writeln;
write( 'Количество чисел - ', count);
end.