#line 2 "/Users/noya2/Desktop/Noya2_library/template/template.hpp"
using namespace std;

#include<bits/stdc++.h>
#line 1 "/Users/noya2/Desktop/Noya2_library/template/inout_old.hpp"
namespace noya2 {

template <typename T, typename U>
ostream &operator<<(ostream &os, const pair<T, U> &p){
    os << p.first << " " << p.second;
    return os;
}
template <typename T, typename U>
istream &operator>>(istream &is, pair<T, U> &p){
    is >> p.first >> p.second;
    return is;
}

template <typename T>
ostream &operator<<(ostream &os, const vector<T> &v){
    int s = (int)v.size();
    for (int i = 0; i < s; i++) os << (i ? " " : "") << v[i];
    return os;
}
template <typename T>
istream &operator>>(istream &is, vector<T> &v){
    for (auto &x : v) is >> x;
    return is;
}

void in() {}
template <typename T, class... U>
void in(T &t, U &...u){
    cin >> t;
    in(u...);
}

void out() { cout << "\n"; }
template <typename T, class... U, char sep = ' '>
void out(const T &t, const U &...u){
    cout << t;
    if (sizeof...(u)) cout << sep;
    out(u...);
}

template<typename T>
void out(const vector<vector<T>> &vv){
    int s = (int)vv.size();
    for (int i = 0; i < s; i++) out(vv[i]);
}

struct IoSetup {
    IoSetup(){
        cin.tie(nullptr);
        ios::sync_with_stdio(false);
        cout << fixed << setprecision(15);
        cerr << fixed << setprecision(7);
    }
} iosetup_noya2;

} // namespace noya2
#line 1 "/Users/noya2/Desktop/Noya2_library/template/const.hpp"
namespace noya2{

const int iinf = 1'000'000'007;
const long long linf = 2'000'000'000'000'000'000LL;
const long long mod998 =  998244353;
const long long mod107 = 1000000007;
const long double pi = 3.14159265358979323;
const vector<int> dx = {0,1,0,-1,1,1,-1,-1};
const vector<int> dy = {1,0,-1,0,1,-1,-1,1};
const string ALP = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
const string alp = "abcdefghijklmnopqrstuvwxyz";
const string NUM = "0123456789";

void yes(){ cout << "Yes\n"; }
void no(){ cout << "No\n"; }
void YES(){ cout << "YES\n"; }
void NO(){ cout << "NO\n"; }
void yn(bool t){ t ? yes() : no(); }
void YN(bool t){ t ? YES() : NO(); }

} // namespace noya2
#line 2 "/Users/noya2/Desktop/Noya2_library/template/utils.hpp"

#line 6 "/Users/noya2/Desktop/Noya2_library/template/utils.hpp"

namespace noya2{

unsigned long long inner_binary_gcd(unsigned long long a, unsigned long long b){
    if (a == 0 || b == 0) return a + b;
    int n = __builtin_ctzll(a); a >>= n;
    int m = __builtin_ctzll(b); b >>= m;
    while (a != b) {
        int mm = __builtin_ctzll(a - b);
        bool f = a > b;
        unsigned long long c = f ? a : b;
        b = f ? b : a;
        a = (c - b) >> mm;
    }
    return a << std::min(n, m);
}

template<typename T> T gcd_fast(T a, T b){ return static_cast<T>(inner_binary_gcd(std::abs(a),std::abs(b))); }

long long sqrt_fast(long long n) {
    if (n <= 0) return 0;
    long long x = sqrt(n);
    while ((x + 1) * (x + 1) <= n) x++;
    while (x * x > n) x--;
    return x;
}

template<typename T> T floor_div(const T n, const T d) {
    assert(d != 0);
    return n / d - static_cast<T>((n ^ d) < 0 && n % d != 0);
}

template<typename T> T ceil_div(const T n, const T d) {
    assert(d != 0);
    return n / d + static_cast<T>((n ^ d) >= 0 && n % d != 0);
}

template<typename T> void uniq(std::vector<T> &v){
    std::sort(v.begin(),v.end());
    v.erase(unique(v.begin(),v.end()),v.end());
}

template <typename T, typename U> inline bool chmin(T &x, U y) { return (y < x) ? (x = y, true) : false; }

template <typename T, typename U> inline bool chmax(T &x, U y) { return (x < y) ? (x = y, true) : false; }

template<typename T> inline bool range(T l, T x, T r){ return l <= x && x < r; }

} // namespace noya2
#line 8 "/Users/noya2/Desktop/Noya2_library/template/template.hpp"

#define rep(i,n) for (int i = 0; i < (int)(n); i++)
#define repp(i,m,n) for (int i = (m); i < (int)(n); i++)
#define reb(i,n) for (int i = (int)(n-1); i >= 0; i--)
#define all(v) (v).begin(),(v).end()

using ll = long long;
using ld = long double;
using uint = unsigned int;
using ull = unsigned long long;
using pii = pair<int,int>;
using pll = pair<ll,ll>;
using pil = pair<int,ll>;
using pli = pair<ll,int>;

namespace noya2{

/*　~ (. _________ . /)　*/

}

using namespace noya2;


#line 2 "c.cpp"

bool valid(vector<ll> a){
    int n = a.size();
    repp(i,1,n-1){
        if (abs(a[i-1] - a[i+1]) == a[i]) continue;
        return false;
    }
    return true;
}

void solve(){
    int n = 2;
    vector<ll> fib = {1,0};
    while (fib[n-1] < ll(1e14)){
        fib.emplace_back(fib[n-1] + fib[n-2]);
        n++;
    }
    ll x, y, z; in(x,y,z);
    auto valid = [&](vector<ll> a){
        int sz = a.size();
        bool exz = false;
        repp(i,1,sz-1){
            if (a[i] < 0) return false;
            if (abs(a[i-1] - a[i+1]) != a[i]) return false;
            if (a[i] == z){
                exz = true;
            }
        }
        return (a[0] == x && a[sz-1] == y && exz);
    };
    auto say = [&](vector<ll> a){
        if (a.empty()){
            out(-1);
            return ;
        }
        assert(valid(a));
        out(a.size());
        out(a);
    };
    vector<ll> ans;
    auto upd = [&](vector<ll> a){
        if (!valid(a)) return ;
        if (ans.empty()){
            ans = a;
        }
        else if (ans.size() > a.size()){
            ans = a;
        }
    };
    upd({x,z,y});
    upd({x,0,z,y});
    upd({x,z,z,y});
    auto begin_end = [&](ll begin, ll end){
        vector<vector<ll>> ret;
        for (int len = 2; len < n; len++){
            ll p = end - fib[len-1]*begin;
            if (p < 0) break;
            if (p % fib[len] != 0) continue;
            p /= fib[len];
            vector<ll> ri(len);
            ri[0] = begin;
            ri[1] = p;
            repp(i,2,len){
                ri[i] = ri[i-1] + ri[i-2];
            }
            assert(ri[len-1] == end);
            ret.emplace_back(ri);
        }
        return ret;
    };
    for (auto ri : begin_end(z,y)){
        int many = n;
        while (ri.front() >= 0){
            if (many-- == 0) break;
            for (auto le : begin_end(ri.front(),x)){
                auto cur = le;
                reverse(all(cur));
                cur.pop_back();
                cur.insert(cur.end(),all(ri));
                upd(cur);
            }
            ri.insert(ri.begin(),ri[1]-ri[0]);
        }
    }
    for (auto le : begin_end(z,x)){
        int many = n;
        while (le.front() >= 0){
            if (many-- == 0) break;
            for (auto ri : begin_end(le.front(),y)){
                auto cur = le;
                reverse(all(cur));
                cur.pop_back();
                cur.insert(cur.end(),all(ri));
                upd(cur);
            }
            le.insert(le.begin(),le[1]-le[0]);
        }
    }
    for (auto tot : begin_end(x,y)){
        upd(tot);
    }
    say(ans);
}

int main(){
    int t = 1; //in(t);
    while (t--) { solve(); }
}