program Min;
uses crt;
var A:array[1..10000] of integer;
n,i:integer;
begin
clrscr;
write('Nhap n: '); readln(n);
for i:=1 to n do
begin
write('Nhap phan tu thu ',i,': ');
readln(A[i]);
end;
write('Vi tri cac so duong la: ');
for i:=1 to n do
if A[i]>=0 then write(i:4);
readln
end.