#include <bits/stdc++.h>
using namespace std;
int s,x;
int gcd(int a,int b){return !b?a:gcd(b,a%b);}
void solve(int s,int x)
{
	for(int i=0;;++i)
	{
		if(abs(gcd(i,x))==1&&abs(gcd(s-i,x))==1){printf("%d %d\n",i,s-i);return;}
	}
}
int main()
{
	scanf("%d%d",&s,&x);
	if(gcd(s,x)==1)printf("1\n%d\n",s);
	else if(s%2==1&&x%2==0)
	{
		printf("3\n1 ");
		solve(s-1,x);
	}
	else printf("2\n"),solve(s,x);
}