#include <bits/stdc++.h>
#include <sys/time.h>
using namespace std;

// hamko utils
#define rep(i,n) for(long long i = 0; i < (long long)(n); i++)
#define repi(i,a,b) for(long long i = (long long)(a); i < (long long)(b); i++)
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define fi first
#define se second
#define mt make_tuple
#define mp make_pair
template<class T1, class T2> bool chmin(T1 &a, T2 b) { return b < a && (a = b, true); }
template<class T1, class T2> bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); }

using ll = long long; using vll = vector<ll>; using vvll = vector<vll>; using P = pair<ll, ll>;
using ld = long double;  using vld = vector<ld>; 
using vi = vector<int>; using vvi = vector<vi>; vll conv(vi& v) { vll r(v.size()); rep(i, v.size()) r[i] = v[i]; return r; }

inline void input(int &v){ v=0;char c=0;int p=1; while(c<'0' || c>'9'){if(c=='-')p=-1;c=getchar();} while(c>='0' && c<='9'){v=(v<<3)+(v<<1)+c-'0';c=getchar();} v*=p; } // これを使うならば、tieとかを消して！！
template <typename T, typename U> ostream &operator<<(ostream &o, const pair<T, U> &v) {  o << "(" << v.first << ", " << v.second << ")"; return o; }
template<size_t...> struct seq{}; template<size_t N, size_t... Is> struct gen_seq : gen_seq<N-1, N-1, Is...>{}; template<size_t... Is> struct gen_seq<0, Is...> : seq<Is...>{};
template<class Ch, class Tr, class Tuple, size_t... Is>
void print_tuple(basic_ostream<Ch,Tr>& os, Tuple const& t, seq<Is...>){ using s = int[]; (void)s{0, (void(os << (Is == 0? "" : ", ") << get<Is>(t)), 0)...}; }
template<class Ch, class Tr, class... Args> 
auto operator<<(basic_ostream<Ch, Tr>& os, tuple<Args...> const& t) -> basic_ostream<Ch, Tr>& { os << "("; print_tuple(os, t, gen_seq<sizeof...(Args)>()); return os << ")"; }
ostream &operator<<(ostream &o, const vvll &v) { rep(i, v.size()) { rep(j, v[i].size()) o << v[i][j] << " "; o << endl; } return o; }
template <typename T> ostream &operator<<(ostream &o, const vector<T> &v) { o << '['; rep(i, v.size()) o << v[i] << (i != v.size()-1 ? ", " : ""); o << "]";  return o; }
template <typename T> ostream &operator<<(ostream &o, const deque<T> &v) { o << '['; rep(i, v.size()) o << v[i] << (i != v.size()-1 ? ", " : ""); o << "]";  return o; }
template <typename T>  ostream &operator<<(ostream &o, const set<T> &m) { o << '['; for (auto it = m.begin(); it != m.end(); it++) o << *it << (next(it) != m.end() ? ", " : ""); o << "]";  return o; }
template <typename T>  ostream &operator<<(ostream &o, const unordered_set<T> &m) { o << '['; for (auto it = m.begin(); it != m.end(); it++) o << *it << (next(it) != m.end() ? ", " : ""); o << "]";  return o; }
template <typename T, typename U>  ostream &operator<<(ostream &o, const map<T, U> &m) { o << '['; for (auto it = m.begin(); it != m.end(); it++) o << *it << (next(it) != m.end() ? ", " : ""); o << "]";  return o; }
template <typename T, typename U, typename V>  ostream &operator<<(ostream &o, const unordered_map<T, U, V> &m) { o << '['; for (auto it = m.begin(); it != m.end(); it++) o << *it; o << "]";  return o; }
vector<int> range(const int x, const int y) { vector<int> v(y - x + 1); iota(v.begin(), v.end(), x); return v; }
template <typename T> istream& operator>>(istream& i, vector<T>& o) { rep(j, o.size()) i >> o[j]; return i;}
template <typename T, typename S, typename U> ostream &operator<<(ostream &o, const priority_queue<T, S, U> &v) { auto tmp = v; while (tmp.size()) { auto x = tmp.top(); tmp.pop(); o << x << " ";} return o; }
template <typename T> ostream &operator<<(ostream &o, const queue<T> &v) { auto tmp = v; while (tmp.size()) { auto x = tmp.front(); tmp.pop(); o << x << " ";} return o; }
template <typename T> ostream &operator<<(ostream &o, const stack<T> &v) { auto tmp = v; while (tmp.size()) { auto x = tmp.top(); tmp.pop(); o << x << " ";} return o; }
template <typename T> unordered_map<T, ll> counter(vector<T> vec){unordered_map<T, ll> ret; for (auto&& x : vec) ret[x]++; return ret;};
string substr(string s, P x) {return s.substr(x.fi, x.se - x.fi); }
void vizGraph(vvll& g, int mode = 0, string filename = "out.png") { ofstream ofs("./out.dot"); ofs << "digraph graph_name {" << endl; set<P> memo; rep(i, g.size())  rep(j, g[i].size()) { if (mode && (memo.count(P(i, g[i][j])) || memo.count(P(g[i][j], i)))) continue; memo.insert(P(i, g[i][j])); ofs << "    " << i << " -> " << g[i][j] << (mode ? " [arrowhead = none]" : "")<< endl;  } ofs << "}" << endl; ofs.close(); system(((string)"dot -T png out.dot >" + filename).c_str()); }
class ScopedTime {
public:
    ScopedTime(const std::string& msg = "") : msg_(msg) {
        start_ = std::chrono::system_clock::now();
    }
    void lap(const std::string& msg) {
        const auto duration_time = std::chrono::system_clock::now() - start_;
        const auto duration_ms = std::chrono::duration_cast<std::chrono::milliseconds>(duration_time);
        std::cerr << "[" << duration_ms.count() << " ms] " << msg << std::endl;
    }
    virtual ~ScopedTime() {
        this->lap(msg_);
    }
private:
    std::chrono::system_clock::time_point start_;
    std::string msg_;
};

size_t g_random_seed;
struct init_{ init_(){ std::ios::sync_with_stdio(false); std::cin.tie(0); srand(static_cast<unsigned int>(time(NULL))); g_random_seed = RAND_MAX / 2 + rand() / 2; } } init__;
namespace std { using argument_type = P; template<> struct hash<argument_type> { size_t operator()(argument_type const& x) const { size_t seed = g_random_seed; seed ^= hash<ll>{}(x.fi); seed ^= (hash<ll>{}(x.se) << 1); return seed; } }; }; // hash for various class

#define ldout fixed << setprecision(40) 
#define EPS (double)1e-14
#define INF (ll)1e18
#define mo  (ll)(1e9+7)
// end of hamko utils

// void out(std::stringstream& ss, char c, int count) {
//     for (int i = 0; i < count; i++) {
//         ss << c;
//     }
// }
//
int N;
int main(void) {
    std::ios::sync_with_stdio(false);
    cin >> N;
    vector<ll> x(N), y(N);
    int odd_or_even = 0;
    for (int i = 0; i < N; i++) {
        cin >> x[i] >> y[i];
    }
    for (int i = 0; i < N; i++) {
        if (i == 0) {
            odd_or_even = (x[i] + y[i]) & 1;
        } else {
            if (odd_or_even != ((x[i] + y[i]) & 1)) {
                std::cout << -1 << std::endl;
                return 0;
            }
        }
    }
    std::stringstream ss;
    vector<ll> d;
    for (int i = 0; i < 31; i++) {
        d.push_back(1ll << i);
    }
    // もしx+yが奇数なら余分に1の長さの腕が必要
    if (odd_or_even == 0) {
        d.push_back(1);
    }

    std::sort(d.rbegin(), d.rend());
    std::cout << d.size() << std::endl;
    // 腕はreverse(1, 1, 2, 4, 8, 16...) とする
    for (auto&& r : d) {
        std::cout << r << " ";
    }
    std::cout << std::endl;

    for (int i = 0; i < N; i++) {
        // それぞれの目標位置について、
        // 原点からスタートして長い腕(原点側）から順番に
        ll xx = 0, yy = 0;
        int dx[] = {-1, 1, 0, 0};
        int dy[] = { 0, 0,-1, 1};
        string dir = "LRDU";
        for (auto l : d) {
            // 目標位置に近づくような方向に腕を定める
            int q = 0;
            ll best = INF; //std::numeric_limits<ll>::max();
            for (int j = 0; j < 4; j++) {
                ll xxx = xx + l * dx[j];
                ll yyy = yy + l * dy[j];
                ll dd = std::abs(xxx - x[i]) + std::abs(yyy - y[i]);
                if (dd < best) {
                    best = dd;
                    q = j;
                }
            }
            std::cout << dir[q];
            xx += l * dx[q];
            yy += l * dy[q];
        }
        std::cout << std::endl;
    }

    return 0;
}


Measured memory_bytes: 256