Program HOC24;
var s: string;
i: byte;
begin
write('Nhap xau :'); readln(s);
for i:=1 to length(s) do if s[i]<>'a' then write(s[i]);
readln
end.
uses crt;
var st:string;
i,d:integer;
begin
clrscr;
write('Nhap xau:'); readln(st);
d:=length(st);
for i:=1 to d do
if st[i]='a' then delete(st,i,1);
writeln(st);
readln;
end.