#include <bits/stdc++.h>
using namespace std;
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int s, x;
    cin >> s >> x;
    if(__gcd(s, x) == 1) {
        cout << 1 << "\n" << s << "\n";
        return 0;
    }
    if(s % 2 == 1 && x % 2 == 0) {
        for(int i = 1; ; ++ i) {
            if(__gcd(i, x) == 1 && __gcd(s - 2 * i, x) == 1) {
                cout << 3 << "\n" << i << " " << i << " " << s - 2 * i << "\n";
                return 0;
            }
        }
    }
    for(int i = 1; ; ++ i) {
        if(__gcd(i, x) == 1 && __gcd(s - i, x) == 1) {
            cout << 2 << "\n" << i << " " << s - i << "\n";
            return 0;
        }
    }
}