var a:array[1..1000] of integer;
i,n,max:integer;
begin
write('n = ');readln(n);
for i:=1 to n do
begin
write('Nhap phan tu thu ',i,' = ');readln(a[i]);
end;
max:=a[1];
for i:=2 to n do
if a[i]>max then max:=a[i];
write('So lon nhat la ',max);
readln
end.