int aaa = 5055;
    int p1 = aaa % 10;
    int p2 = ((aaa - p1) % 100) / 10;
    int p3 = ((aaa - p2-p1) % 1000) / 100;
    int p4 = ((aaa - p3-p2-p1) % 10000) / 1000;
    cout << p1 << endl << p2 << endl << p3 << endl << p4;