#![allow(unused, non_snake_case, dead_code, non_upper_case_globals)]
use std::cmp::*;
use std::collections::*;
use std::mem::*;

fn main() {
    let (r, w, e) = (std::io::stdin(), std::io::stdout(), std::io::stderr());
    let mut io = IO::new(r.lock(), w.lock(), e.lock());
    // robot arms
    /*
    腕
     length:  1,2,4,8,16,...
     いっぱい
     パリティが一致しているならOK

    */
    let n = io.read::<usize>();
    let mut X = Vec::new();
    let mut Y = Vec::new();
    for _ in 0..n {
        let (x, y) = (io.read::<i64>(), io.read::<i64>());
        X.push(x);
        Y.push(y);
    }
    for (x, y) in X.iter().zip(Y.iter()) {
        if (X[0] ^ Y[0]) & 1 != ((x ^ y) & 1) {
            io.writeln(-1);
            return;
        }
    }

    let mut M = 32;
    let mut V = Vec::new();
    for i in 0..M {
        V.push(1 << (M - i - 1));
    }
    if (X[0] ^ Y[0]) & 1 == 0 {
        V.push(1);
        M += 1;
    }

    io.writeln(M);
    for &x in V.iter() {
        io.write(x);
        io.write(" ");
    }
    io.writeln("");

    for i in 0..n {
        let mut ret = Vec::new();
        for j in 0..M {
            if X[i].abs() >= Y[i].abs() {
                if X[i] >= 0 {
                    ret.push('R');
                    X[i] -= V[j];
                } else {
                    ret.push('L');
                    X[i] += V[j];
                }
            } else {
                if Y[i] >= 0 {
                    ret.push('U');
                    Y[i] -= V[j];
                } else {
                    ret.push('D');
                    Y[i] += V[j];
                }
            }
        }
        for &c in ret.iter() {
            io.write(c);
        }
        io.writeln("");
    }
}

static MX: usize = 1010101;
static MOD: i64 = 1000000007;
static INF: i64 = std::i64::MAX >> 1;
// IO
use std::io::*;
struct IO<R: Read, W: Write, E: Write> {
    Read: R,
    Write: BufWriter<W>,
    Error: BufWriter<E>,
}
impl<R: Read, W: Write, E: Write> IO<R, W, E> {
    fn new(r: R, w: W, e: E) -> IO<R, W, E> {
        IO {
            Read: r,
            Write: BufWriter::new(w),
            Error: BufWriter::new(e),
        }
    }
    fn read<T>(&mut self) -> T
    where
        T: std::str::FromStr,
    {
        let next: String = self
            .Read
            .by_ref()
            .bytes()
            .map(|c| c.unwrap() as char)
            .skip_while(|c| c.is_whitespace())
            .take_while(|c| !c.is_whitespace())
            .collect();
        next.parse().ok().unwrap()
    }
    fn chars(&mut self) -> Vec<char> {
        self.read::<String>().chars().collect()
    }
    fn chari(&mut self) -> Vec<i64> {
        self.chars()
            .iter()
            .map(|&c| (c as u8 - b'0') as i64)
            .collect::<Vec<i64>>()
    }
    fn readn<T: std::str::FromStr>(&mut self, n: usize) -> Vec<T> {
        (0..n).map(|_| self.read::<T>()).collect::<Vec<_>>()
    }
    fn readmat<T: std::str::FromStr>(&mut self, n: usize, m: usize) -> Vec<Vec<T>> {
        (0..n).map(|_| self.readn(m)).collect()
    }
    fn write<S: ToString>(&mut self, val: S) {
        self.Write.write(val.to_string().as_bytes());
    }
    fn writeln<S: ToString>(&mut self, val: S) {
        self.Write.write(val.to_string().as_bytes());
        self.Write.write(b"\n");
    }
    fn debug<S: std::fmt::Debug>(&mut self, val: S) {
        writeln!(self.Error, "(debug) {:?}", &val);
    }
    fn debug2<S: std::fmt::Debug, T: std::fmt::Debug>(&mut self, val1: S, val2: T) {
        writeln!(self.Error, "(debug2) {:?} -> {:?}", val1, val2);
    }
    fn debug3<S: std::fmt::Debug, T: std::fmt::Debug, U: std::fmt::Debug>(
        &mut self,
        val1: S,
        val2: T,
        val3: U,
    ) {
        writeln!(
            self.Error,
            "(debug3) {:?} -> {:?} -> {:?}",
            val1, val2, val3
        );
    }
}


Measured memory_bytes: 2184