uses crt;
var i,t,a:integer;
begin
clrscr;
a:=0; t:=0;
for i:=1 to 100 do
begin
t:=t+a;
a:=a+2;
end;
writeln('Tong cua 100 so tu nhien chan dau tien la: ',t);
readln;
end.
Program hotrotin_hoc24;
var i: integer;
t: longint;
begin
t:=0;
for i:=1 to 200 do if t:=if i mod 2=0 then t:=t+i;
write('Tong 100 so tu nhien chan dau tien la : ',t);
readln
end.