lesson15_321

#include <iostream>

using namespace std;

void koord1() {
    for (int n = 0; n < 7; n++) {
        for (int k = 0; k < 7; k++) {
            if ((k == n) || (k + n == 6) ||
                (k == 3) || (n == 3)) {
                cout << "* ";
            }
            else {
                cout << "  ";
            }
        }
        cout << endl;
    }
}


void koord2() {
    for (int y = 3; y >= -3; y--) {
        for (int x = -3; x <= 3; x++) {
            if ((y == x) || (y == -x) ||
                (y == 0) || (x == 0)) {
                cout << "* ";
            }
            else {
                cout << "  ";
            }
        }
        cout << endl;
    }
}

void task_m() {
    int a = 5;
    /*long long*/ double prod = 1;

    //cin >> a;
    if (a <= 0)
        cout << "Error" << endl;
    else
    {
        for (int n = 1; n < 20 - a; n++) {
            prod *= n;
        }
        cout << prod << endl;
    }
}

void test_array() {

    const int size = 56;

    //cin >> size;

    int vals[size];

    for (int k = 0; k < size; k++)
        cin >> vals[k];

    /*
    vals[0] = 77;
    vals[1] = 55;
    vals[2] = 33;
    vals[3] = 10;
    */


    for (int k = 0; k < size; k++)
        cout << vals[k] << " ";
    cout << endl;

    for (int k = size-1; k >= 0; k--)
        cout << k << "-" << vals[k] << " ";
    cout << endl;


    int summ = 0;
    for (int k = 0; k < size; k++)
        summ = summ + vals[k];

    cout << summ << endl;
    cout << vals[0] + vals[2] << endl;

    /*
        cout << vals[0] << " "
        << vals[1] << " "
        << vals[2] << " "
        << vals[3] << endl;
        */
}


int main() {
    //task_m();
    test_array();
    //koord2();
    return 0;
}