lesson13_322

#include <iostream>

using namespace std;

void average700() {

    int n = 0;
    int step = 0;
    double aver = 0;
    double summ = 0;

    do {
        n++;
        int k = 2;
        bool is_simple = true;
        while (k < n) {
            if ((n % k) == 0) {
                is_simple = false;
                break;
            }
            k++;
        }
        if (is_simple) {
            step++;
            summ += n;
            aver = summ / step;
            cout << aver << endl;
        }
    } while (aver < 700);

    /*
    while (aver < 700) {
        step++;
        n++;
        summ += n;
        aver = summ / step;
        cout << aver << endl;
    }
    */
}

void calc_clock() {
    const int n = 12;
    int num_bam = 0;
    for (int k = 1; k <= n; k++) {
        num_bam += k;
    }
    cout << num_bam << endl;
}

void test_fibbo() {
    int Fn_1 = 1; // F1
    int Fn_2 = 0; // F0
    int Fn;
    for (int n = 2; n < 20; n++) {
        Fn = Fn_2 + Fn_1;
        cout << Fn << endl;
        Fn_2 = Fn_1;
        Fn_1 = Fn;
    }
}

void test_lucky() {
    int val, a1, a2, a3, a4, a5, a6;
    int num = 0;


    for (int n = 1; n < 999999; n++) {
        val = n;
        a6 = val % 10;
        val /= 10;

        a5 = val % 10;
        val /= 10;

        a4 = val % 10;
        val /= 10;

        a3 = val % 10;
        val /= 10;

        a2 = val % 10;
        val /= 10;

        a1 = val % 10;
        val /= 10;
        if ((a1 + a2 + a3) == (a4 + a5 + a6)) {
            cout << n << " ";
            num++;
            continue;
        }
        if ((a1 == a2 == a3) && (a4 == a5 == a6)) {
            cout << n << " ";
            num++;
            continue;
        }

        if ((10 * a1 + a2) == (10 * a3 + a4) &&
            (10 * a1 + a2) == (10 * a5 + a6)) {
            cout << n << " ";
            num++;
            continue;
        }
    }
    cout << endl << " lucky" << num << endl;
}

int main() {
    //average700();
    /*
    int n = 0;
    while (n < 777) {
        n++;
        if (n > 100 && n < 777)
            continue;
        cout << n << " ";
    }
    */
    //test_fibbo();
    //calc_clock();

    test_lucky();
    cout << endl;
    return 0;
}