uses crt;
var i,n,s,d:longint; a:array[1..1000000]of longint;
begin
clrscr;
write('Nhap n: ');readln(n);
for i:=1 to n do
begin
write('A[',i,']= ');readln(a[i]);
if a[i]=5 then inc(s,a[i]);
if a[i]>0 then inc(d);
end;
writeln('a. Tong cac so hang chia het cho 5: ',s);
writeln('b. Trong day co ',d,' so duong');
readln
end.