#include <bits/stdc++.h>
#pragma GCC optimize("O3")

using namespace std;

using ll = long long;

#define INF 0x3f3f3f3f
#define LNF (ll) 0x3f3f3f3f3f3f3f3f 

#define MOD 998244353
#define N 220

ll grand() {
    return 1e9 - rand() % (int) 2e9;
}

int main() {
#ifdef TEST
    freopen("zz.in", "r+", stdin);
#endif
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);    

    ll s, x; cin >> s >> x;

    if (__gcd(s, x) == 1) {
        cout << 1 << '\n';
        cout << s << '\n';
        return 0;
    }

    for (int i = 0; i < 1e6; ++ i) {
        ll a = grand();
        if (__gcd(a, x) != 1) continue;
        ll b = s - a;
        if (__gcd(b, x) != 1 || abs(b) > 1e9) continue;
        cout << 2 << '\n';
        cout << a << ' ' << b << '\n';
        return 0;
    }

    for (int i = 0; i < 1e6; ++ i) {
        ll a = grand(), b = grand();
        if (__gcd(a, x) != 1 || __gcd(b, x) != 1) continue;
        ll c = s - a - b;
        if (__gcd(c, x) != 1 || abs(c) > 1e9) continue;
        cout << 3 << '\n';
        cout << a << ' ' << b << ' ' << c << '\n';
        return 0;
    }

    cout << -1 << '\n';
    return 0;
}