uses crt;
var s,i:integer;
begin
for i:=11 to 99 do
if a mod 2 <> 0 then s:=s+i;
writeln(s);
readln;
end.
2.
for i:=1 to 50 do s:=s+i;
writeln(s/50);
end;
uses crt;
var s,i:integer;
begin
for i:=11 to 99 do
if a mod 2 <> 0 then s:=s+i;
writeln(s);
readln;
end.
2.
uses crt;
var s,i:integer;
begin
for i:=1 to 50 do s:=s+i;
writeln(s/50);
readln;
end;