/*
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 */
#include <iostream>
#include <complex>
#include <vector>
#include <string>
#include <algorithm>
#include <cstdio>
#include <numeric>
#include <cstring>
#include <ctime>
#include <cstdlib>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <list>
#include <cmath>
#include <bitset>
#include <cassert>
#include <queue>
#include <stack>
#include <deque>
#include <random>
     
      
using namespace std;
template<typename T1, typename T2>inline void chkmin(T1 &x, T2 y) { if (x > y) x = y; }
template<typename T1, typename T2>inline void chkmax(T1 &x, T2 y) { if (x < y) x = y; } 
template<typename T, typename U> inline ostream &operator<< (ostream &_out, const pair<T, U> &_p) { _out << _p.first << ' ' << _p.second; return _out; }
template<typename T, typename U> inline istream &operator>> (istream &_in, pair<T, U> &_p) { _in >> _p.first >> _p.second; return _in; }
template<typename T> inline ostream &operator<< (ostream &_out, const vector<T> &_v) { if (_v.empty()) { return _out; } _out << _v.front(); for (auto _it = ++_v.begin(); _it != _v.end(); ++_it) { _out << ' ' << *_it; } return _out; }
template<typename T> inline istream &operator>> (istream &_in, vector<T> &_v) { for (auto &_i : _v) { _in >> _i; } return _in; }
template<typename T> inline ostream &operator<< (ostream &_out, const set<T> &_s) { if (_s.empty()) { return _out; } _out << *_s.begin(); for (auto _it = ++_s.begin(); _it != _s.end(); ++_it) { _out << ' ' << *_it; } return _out; }
template<typename T> inline ostream &operator<< (ostream &_out, const multiset<T> &_s) { if (_s.empty()) { return _out; } _out << *_s.begin(); for (auto _it = ++_s.begin(); _it != _s.end(); ++_it) { _out << ' ' << *_it; } return _out; }
template<typename T> inline ostream &operator<< (ostream &_out, const unordered_set<T> &_s) { if (_s.empty()) { return _out; } _out << *_s.begin(); for (auto _it = ++_s.begin(); _it != _s.end(); ++_it) { _out << ' ' << *_it; } return _out; }
template<typename T> inline ostream &operator<< (ostream &_out, const unordered_multiset<T> &_s) { if (_s.empty()) { return _out; } _out << *_s.begin(); for (auto _it = ++_s.begin(); _it != _s.end(); ++_it) { _out << ' ' << *_it; } return _out; }
template<typename T, typename U> inline ostream &operator<< (ostream &_out, const map<T, U> &_m) { if (_m.empty()) { return _out; } _out << '(' << _m.begin()->first << ": " << _m.begin()->second << ')'; for (auto _it = ++_m.begin(); _it != _m.end(); ++_it) { _out << ", (" << _it->first << ": " << _it->second << ')'; } return _out; }
template<typename T, typename U> inline ostream &operator<< (ostream &_out, const unordered_map<T, U> &_m) { if (_m.empty()) { return _out; } _out << '(' << _m.begin()->first << ": " << _m.begin()->second << ')'; for (auto _it = ++_m.begin(); _it != _m.end(); ++_it) { _out << ", (" << _it->first << ": " << _it->second << ')'; } return _out; }
#define sz(c) (int)(c).size()
#define all(c) (c).begin(), (c).end()
#define rall(c) (c).rbegin(), (c).rend()
#define left left228
#define right right228
#define next next228
#define rank rank228
#define prev prev228
#define y1 y1228                                                         
#define read(FILENAME) freopen((FILENAME + ".in").c_str(), "r", stdin)
#define write(FILENAME) freopen((FILENAME + ".out").c_str(), "w", stdout)
#define files(FILENAME) read(FILENAME), write(FILENAME)
#define pb push_back
#define x first
#define y second
const string FILENAME = "input";
const int MAXN = 1228;
const long long LINF = 1000000000000000000LL;
 
int n;
long long x[MAXN], y[MAXN];
int dx[4] = {1, -1, 0, 0};
int dy[4] = {0, 0, 1, -1};
char dir[4] = {'R', 'L', 'U', 'D'};
 
 
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    //read(FILENAME); 
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> x[i] >> y[i];
    }  
    bool need = false;
    if (abs(x[0] + y[0]) % 2 == 0) {
        need = true;
        for (int i = 0; i < n; i++) {
            x[i]--;
        }
    }
    for (int i = 0; i < n; i++) {
        if ((x[i] + y[i]) % 2 == 0) {
            cout << -1 << "\n";
            return 0;
        }
    }
    vector<long long> st;
    for (int i = 0; i <= 31; i++) {
        st.pb(1LL << i);
    }
    if (need) {
        st.pb(1);
    }
    reverse(all(st));
    cout << sz(st) << '\n';
    for (auto x: st) {
        cout << x << ' ';
    }
    cout << '\n';
    for (int i = 0; i < n; i++) {
        string s;
        if (need) {
            s += 'R';
        }
        for (int j = 31; j >= 0; j--) {
            int opt;
            long long best = LINF;
            for (int k = 0; k < 4; k++) {
                long long cur = abs(x[i] - dx[k] * (1LL << j)) + abs(y[i] - dy[k] * (1LL << j));
                if (cur < best) {
                    best = cur;
                    opt = k;
                }
            }
            x[i] -= dx[opt] * (1LL << j);
            y[i] -= dy[opt] * (1LL << j);
            s += dir[opt];
        }
        assert(x[i] == 0 && y[i] == 0);
        cout << s << '\n';
    }
    return 0;
} 

Measured memory_bytes: 384