resheto na erdosten

#include <cmath>

using namespace std;
int main()
{
    const unsigned ROWS = 4;
    int a, b;

    do
    {
        cout << "a: " << endl;
        cin >> a;
    } while (a==0); // INPUT A&B

    do
    {
        cout << "b: " << endl;
        cin >> b;
    } while (b == 0);

    if (a < b)
    {
        a ^= b;
        b ^= a;
        a ^= b;
    } // A>B // A>B

    int r = a, q = b, t = r % q; unsigned cols = 2;

    while (t)
    {
        r = q;
        q = t;
        t = r % q;
        cols++;
    }  // COL COUNT

    cout << "cols: " << cols << endl;

    int * arr[ROWS];
    for (int i=0;i<ROWS;i++)
    {
        arr[i] = new int[cols] {0};
    }

    arr[0][0] = a;
    arr[0][1] = b;
    arr[2][0] = 1;
    arr[3][1] = 1;

    r = a;
    q = b;
    t = r % q;
    unsigned j = 2;

    while (t)
    {
        arr[0][j] = t;
        arr[1][j-1] = r / b;
        r = q;
        q = t;
        t = r % q;
        j++;
    }

    arr[1][j - 1] = r / q;

    for (int i =2;i<ROWS;i++)
    {
        for (int j=2;j<cols;j++)
        {
            arr[i][j] = arr[i - 1+i%2][j - 1] * arr[i][j - 1] + arr[i][j - 2];
        }
    }

    for (int i = 0;i<ROWS;i++)
    {
        for (int j=0; j < cols; j++)
        {
            cout << arr[i][j]<< endl;
        }
    }
    cout << endl;


    for (int j = 0; j < cols; j++)
    {
        cout << arr[0][j] << "=" << pow(-1, j)*arr[2][j] << "*" << a << "+" << pow(1, j + 1) * arr[3][j] << "*" << b << endl;

    }


    for (int i = 0; i < ROWS; i++)
    {
        if (arr[i] != nullptr) { delete[] arr[i]; }       //DELETE[]
    }

    return 0;
}