Program HOC24;
var i: integer;
s: real;
begin
s:=0;
for i:=10 to 100 do
s:=s+i/(i+1);
write('S=',s:1:2);
readln
end.
uses crt;
var s:real;
a:integer;
begin
clrscr;
a:=10;
while a<=100 do
begin
s:=s+a/(a+1);
inc(a);
end;
writeln('S=',s:4:2);
readln;
end.