#include <bits/stdc++.h>
using namespace std;

using ui = unsigned;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
#define rep(i,l,r) for(int i=(l);i<=(r);++i)
#define per(i,l,r) for(int i=(l);i>=(r);--i)
#define repn(i,n)  for(int i=0;i<(n);++i)
#define sizc(x) ((int)x.size())
#define allc(x) x.begin(),x.end()
#define fir first
#define sec second



signed main(){
    // freopen(".in","r",stdin);
    // freopen(".out","w",stdout);
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    ll s,x;cin>>s>>x;
    if((s&1)&&!(x&1)){
        cout<<"3\n1 ";
        --s;
    }
    else cout<<"2\n";
    for(ll i=1;i<=1e9;++i){
        ll j=s-i;
        if(__gcd(i,x)==1&&__gcd(j,x)==1){
            cout<<i<<' '<<j<<'\n';
            exit(0);
        }
    }
}