Program HOC24;
const fi='baitap.inp';
var f: text;
a,b: integer;
t: longint;
procedure ip;
begin
assign(f,fi);
reset(f);
read(f,a,b);
close(f);
end;
begin
ip;
writeln('Thuong cua 2 so la : ',a/b:1:2);
t:=0;
for i:=a to b do t:=t+i;
writeln('Tong cac so co trong khoang tu ',a,' den ',b,' la ',t);
t:=1;
for i:=a to b do if i mod 2<>0 then t:=t+i;
write('Tich cac so le trong khoang tu ',a,' den ',b,' la ',t);
readln
end.