program Bai_1;
uses crt;
var A:array [1..500] of integer;
n,i,max,T: integer;
Begin
clrscr;
write('a) Nhap do dai day: '); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(A[i]);
end;
max:=1;
for i:=1 to n do
if max<A[i] then max:=A[i];
writeln('b) Gia tri lon nhat: ',max);
for i:=1 to n do
if A[i] mod 2=0 then T:=T+A[i];
writeln('c) Tong cac phan tu chan = ',T);
readln
End.
