/C++/Implementation of Extended Euclidian theorem

Implementation of Extended Euclidian theorem

int gcd(int a, int b, int& x, int& y) {
    if (b == 0) {
        x = 1;
        y = 0;
        return a;
    }
    int x1, y1;
    int d = gcd(b, a % b, x1, y1);
    x = y1;
    y = x1 - y1 * (a / b);
    return d;
}

Source: cp-algorithms.com

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