#include<bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define log(x) (31^__builtin_clz(x))
#define lowbit(x) (x&-x)
#define pii pair<int,int>
using namespace std;

void solve(){
	ll s,x;
	cin>>s>>x;
	ll ans=0;
	for(ll i=s;i;i++){
		if(__gcd(i,x)==1){
			ans=i;
			break;
		}
	}
	cout<<1+ans-s<<"\n";
	cout<<ans<<" ";
	for(int i=1;i<=ans-s;i++)cout<<"-1 ";
	cout<<"\n";
}
int main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int t=1;
	// cin>>t;
	while(t--)solve();
}
/*
x
y
*/