process.stdin.resume();
process.stdin.setEncoding('ascii');

var input_stdin = "";
var input_stdin_array = "";
var input_currentline = 0;

process.stdin.on('data', function (data) {
    input_stdin += data;
});

process.stdin.on('end', function () {
    input_stdin_array = input_stdin.split("\n");
    main();    
});

function readLine() {
    return input_stdin_array[input_currentline++];
}

/////////////// ignore above this line ////////////////////

let min = Infinity;
let sPath = null;

function printShortestPath(n, i_start, j_start, i_end, j_end, path=[], count=0) {
    //  Print the distance along with the sequence of moves.
    //console.log(i_start, j_start, i_end, j_end)
    if (i_start === i_end && j_start === j_end) {
        if (count < min) {
            min = count;
            sPath = path.slice();
            //console.log('new min: ', min, ' sPath:', sPath)
        }
    }
    if (validate(n, i_start, j_start, i_end, j_end)) {
        const ds = getDis(i_start, j_start, i_end, j_end);
        for (let i = 0; i < moves.length; i++) {
            const move = moves[i];
            //console.log('next move: ', move)
            const newI = i_start + mvs[move].i;
            const newJ = j_start + mvs[move].j;
            const newDs = getDis(newI, newJ, i_end, j_end);
            //console.log(i_start, j_start, 'newI: ', newI, ' newJ:', newJ, 'newDs: ', newDs, path)            
            if (newDs < ds) {
                count++;
                path.push(move);
                printShortestPath(n, newI, newJ, i_end, j_end, path, count)
                path.pop();
                count--;
            }
        }
    }
}

function main() {
    var n = parseInt(readLine());
    var i_start_temp = readLine().split(' ');
    var i_start = parseInt(i_start_temp[0]);
    var j_start = parseInt(i_start_temp[1]);
    var i_end = parseInt(i_start_temp[2]);
    var j_end = parseInt(i_start_temp[3]);
    printShortestPath(n, i_start, j_start, i_end, j_end);
    if (sPath) {
        console.log(min);
        console.log(sPath.join(' '));
    } else {
        console.log('Impossible');
    }
}

function getDis(i1, j1, i2, j2) {
    return Math.abs(i1 - i2) + Math.abs(j1 - j2);
}

function validate(n, i_start, j_start, i_end, j_end) {
    if (i_start < 0 || j_start < 0 || i_end < 0 || j_end < 0) return false;
    if (i_start >= n || j_start >= n || i_end >= n || j_end >= n) return false;
    
    const di = Math.abs(i_start - i_end);
    const dj = Math.abs(j_start - j_end);
    if (di % 2 === 0) {
      return (dj - di / 2) % 2 === 0;
    } else {
      return false;
    }
}

function validateOld(n, i_start, j_start, i_end, j_end) {
    if (i_start < 0 || j_start < 0 || i_end < 0 || j_end < 0) return false;
    if (i_start >= n || j_start >= n || i_end >= n || j_end >= n) return false;
    
    const di = Math.abs(i_start - i_end);
    return true;
}

const moves = ['UL', 'UR', 'R', 'LR', 'LL', 'L'];

const mvs = {
  'UL': {
    i: -2,
    j: -1
  }, 
  'UR': {
    i: -2,
    j: 1
  }, 
  'R': {
    i: 0,
    j: 2
  }, 
  'LR': {
    i: 2,
    j: 1
  }, 
  'LL': {
    i: 2,
    j: -1
  }, 
  'L': {
    i: 0,
    j: -2
  }
}