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