var
a,b,i,k:integer;
begin
readln(a,b);
for i:=a to b do
begin
writeln(i,' ');
inc(k);
end;
writeln;
writeln(k);
readln;
end.
var
a,b,i,k:integer;
begin
readln(a,b);
for i:=a to b do
begin
writeln(i,' ');
inc(k);
end;
writeln;
writeln(k);
readln;
end.