Program HOC24;
var s: string[100];
i,o,u: integer;
begin
write('Nhap xau s='); readln(s);
o:=0; u:=0;
for i:=1 to length(s) do
begin
if s[i]='o' then o:=o+1;
if s[i]='u' then u:=u+1;
end;
write('Trong day co ',o,' ki tu "o" ; va ',u,' ki tu "u"');
readln
end.