#include<bits/stdc++.h>
using namespace std;
#define time chrono::system_clock::now().time_since_epoch().count()
mt19937_64 rnd(time);
#define maxn 1000005
#define int long long

int read() {int x;cin>>x;return x;}

void solve() {
    int n = read(), s = read();
    if(__gcd(n, s) == 1) {
        cout << 1 << "\n" << n << "\n";
    }
    else if(__gcd(n + 1, s) == 1 || __gcd(n - 1, s) == 1) {
        cout << 2 << "\n";
        if(__gcd(n + 1, s) == 1) cout << n + 1 << " " << 1 << "\n";
        else cout << n - 1 << " " << 1 << "\n";
    }
    else {
        cout << 3 << "\n";
        cout << n - 2 << " " << 1 << " " << 1 << "\n"; 
    }
}

signed main() {
    #ifdef ONLINE_JUDGE
        ios::sync_with_stdio(false);
        cin.tie(0);cout.tie(0);
    #else
        //freopen("a.in", "r", stdin);
    #endif

    solve();
    return 0;
}