#include <bits/stdc++.h>
#include "testlib.h"
// #include "constraints.hpp"
using namespace std;

const long long MIN_ST = 1;
const long long MAX_ST = 1000000000;
const int MIN_K = 1;
const int MAX_K = 200000;


using P = pair<long long, long long>;


// O(sqrt(x))
P to_ij(long long x) {
    static const int dx[] = { 1, 0, -1, 0 };
    static const int dy[] = { 0, 1, 0, -1 };

    int k = 0;
    long long p = 1;
    long long d = 1;
    P pos(0, 0);
    while (p < x) {
        for (int i = 0; i < 2; ++i) {
            long long s = min(d, x - p);
            p += s;
            pos.first += s * dx[k + i];
            pos.second += s * dy[k + i];
        }
        k ^= 2;
        ++d;
    }
    return pos;
}

// O(1)
long long to_x(long long i, long long j) {
    long long k = max(abs(i), abs(j));
    long long s = k * 2 + 1;
    if (j == -k) {
        return s * s - (s - 1) * 0 - (k - i);
    }
    else if (i == -k) {
        return s * s - (s - 1) * 1 - (k + j);
    }
    else if (j == k) {
        return s * s - (s - 1) * 2 - (k + i);
    }
    else {
        return s * s - (s - 1) * 3 - (k - j);
    }
}
long long to_x(const P& p) {
    return to_x(p.first, p.second);
}

// (command, xor)
// xor: except from value
pair<string, long long> get_move(const P& from, const P& to) {
    P p = from;
    string command = "";
    long long x = 0;
    // RUDL
    while (p.first < to.first) {
        ++p.first;
        command += "R";
        x ^= to_x(p);
    }
    while (p.second < to.second) {
        ++p.second;
        command += "U";
        x ^= to_x(p);
    }
    while (p.second > to.second) {
        --p.second;
        command += "D";
        x ^= to_x(p);
    }
    while (p.first > to.first) {
        --p.first;
        command += "L";
        x ^= to_x(p);
    }
    return { command, x };
}

string solve(const P& s, const P& t) {
    long long x = get_move(s, t).second;
    string ans = "";
    if (x != 0) {
        ans += get_move(s, to_ij(x)).first;
        ans += get_move(to_ij(x), s).first;
        ans += get_move(s, t).first;
    }
    else {
        x = get_move(t, s).second;
        assert(x != 0);
        ans += get_move(s, t).first;
        ans += get_move(t, to_ij(x)).first;
        ans += get_move(to_ij(x), t).first;
    }
    return ans;
}

string solve(long long s, long long t) {
    return solve(to_ij(s), to_ij(t));
}


int main(int argc, char** argv) {
    registerValidation(argc, argv);
    long long S = inf.readLong(MIN_ST, MAX_ST, "S");
    inf.readSpace();
    long long T = inf.readLong(MIN_ST, MAX_ST, "T");
    ensure(S != T);
    inf.readEoln();
    inf.readEof();

    string ans = solve(S, T);
    cout << "0\n" << ans.length() << '\n' << ans << '\n';

    return 0;
}