Program viet_chuong_trinh_tinh_tong;
Uses Crt;
Var i,s:integer;
Begin
Clrscr;
i:=2;
While (i>1) and (i<=100) do
Begin
s:=s+i;
i:=i+2;
End;
Writeln(S);
Readln;
End.
uses crt;
var i:integer;
begin
clrscr;
i:=50;
while i<=150 do
begin
if i mod 2=0 then write(i:4);
i:=i+1;
end;
writeln;
i:=50;
while i<=150 do
begin
if i mod 2=1 then write(i:4);
i:=i+1;
end;
readln;
end.