Suma nr. de 4 cifre

#include <iostream>
using namespace std;

int main()
{
    int n, a;
    int suma = 0;

    cout << "Introdu n: "; cin >> n;

    for (int i = 0; i < n; i++)
    {
        cout << "Introdu a: "; cin >> a;

        if (a >= 1000 && a < 10000)
        {
            suma += a;
        }
    }

    cout << "Suma: " << suma << endl;

    return 0;
}