program Min;
uses crt;
var A:array [1..1000] of integer;
n,i:integer;
begin
clrscr;
write('Nhap n<=1000: '); readln(n);
for i:=1 to n do
begin
write('Nhap phan tu A[',i,']: ');
readln(A[i]);
end;
for i:=1 to n do
if A[i]>=0 then writeln(A[i],', chi so la: ',i);
readln
end.