uses crt;
var s:real;
a,b,i:integer;
begin
clrscr;
write('A B -> ');
readln(a,b);
s:=0;
for i:=a to b do if (i mod 6 = 0) and (i > 0) then s:=s+ln(i);
writeln('S=',s:0:4);
readln;
end.
uses crt;
var s:real;
a,b,i:integer;
begin
clrscr;
write('A B -> ');
readln(a,b);
s:=0;
for i:=a to b do if (i mod 6 = 0) and (i > 0) then s:=s+ln(i);
writeln('S=',s:0:4);
readln;
end.