#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int>P;
using ll = long long;
const ll N = 2e5 + 5;
void solve(){
    ll s,x;
    cin >> s >> x;
    if(__gcd(s,x)==1){
        cout << 1 << "\n";
        cout << s << "\n";
        return;
    }
    for(ll i=x;i<=x+100000;i++){
        if(__gcd(x,i)==1&&__gcd(s-i,x)==1){
            cout << 2 << "\n";
            cout << i << " " << s-i << "\n";
            return;
        }
    }
    for(ll i=x;i<=x+100000;i++){
        if(__gcd(x,i)==1&&__gcd(s-1-i,x)==1){
            cout << 3 << "\n";
            cout << i << " " << s-i-1 << " " << 1 << "\n";
            return;
        }
    }
}
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    ll T = 1;
    //cin >> T;
    while (T--) {
        solve();
    }
    return 0;
}