program ghi_so;
uses crt;
var f:text;
a,b:integer;
begin
clrscr;
Assign(f,'D:\DULIEU.TXT'); rewrite(g);
repeat
write('Nhap a: '); readln(a);
writeln('a khong qua 100. Nhap lai!');
until a<=100;
repeat
write('Nhap b: '); readln(b);
writeln('b khong qua 100. Nhap lai!');
until b<=100;
write(g,a,' ',b);
close(f);
end.