#include <bits/stdc++.h>
using namespace std;
#define all(v) (v).begin(),(v).end()
#define pb(a) push_back(a)
#define rep(i, n) for(int i=0;i<n;i++)
#define foa(e, v) for(auto& e : v)
using ll = long long;
const ll MOD7 = 1000000007, MOD998 = 998244353, INF = (1LL << 60);
#define dout(a) cout<<fixed<<setprecision(10)<<a<<endl;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);

    ll s, x;
    cin >> s >> x;
    vector<ll> v;
    while(1) {
        v.pb(1);
        s --;
        if(__gcd(s, x) == 1) {
            v.pb(s);
            cout << v.size() << endl;
            foa(e, v) cout << e << " ";
            cout << endl;
            return 0;
        }
    }
    return 0;
}