#include<bits/stdc++.h>

using namespace std;

#define int long long 
#define pb push_back
#define F first 
#define S second

const int mol=1e9+7;


void solve(){
    int s, x;
    cin>>s>>x;
    vector<int>ans;
    int now=0;
    while(__gcd((s-now), x)!=1){
        now-=x-1;
        ans.pb(-x+1);
    }
    ans.pb(s-now);
    cout<<ans.size()<<"\n";
    for(int i: ans) cout<<i<<" ";
}


signed main(){
    ios::sync_with_stdio(0);cin.tie(0);
    solve();    
    return 0;
}