bacT1 sIII 3

#include <iostream>
#include <fstream>
using namespace std;
ofstream fout("bac.txt");

int main() {
    int a, b, c = 0;
    cin >> a >> b;
    fout << b << ' ' << a << ' ';
    while (c != 1) {
        c = 3 * a - b;
        fout << c << ' ';
        b = a;
        a = c;
    }
    fout << 1 << ' ';
    return 0;
}