GCD extended

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <cstdio>
#include <vector>
#include <cmath>
#include <string>
#include <algorithm>
#include <string>
#include <deque>
#include <iomanip>
#include <cstddef>

#define F first
#define S second

using namespace std;


const long double eps = 0.000000005;
const long double pi = 3.1415926535897932;
const long long inf = 1e9;

vector<vector<int, int> > g;
vector<bool> used;
vector <int> d;

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

int main()
{
    ios_base::sync_with_stdio(0);
    //freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout);
    // freopen("slalom.in", "r", stdin);freopen("slalom.out", "w", stdout);

    int a, b, c;
    cin >> a >> b >> c;

    int x, y;

    int ans = gcd_ext(x, y, a, b);



    return 0;
}