import math

def pos(n):
    if n == 1:
        return 0, 0
    layer = int((math.sqrt(n) - 1) / 2)
    while (2 * layer + 1) ** 2 < n:
        layer += 1
    offset = (2 * layer - 1) ** 2
    edge = 2 * layer
    diff = n - offset - 1
    q, r = divmod(diff, edge)
    r += 1
    if q == 0:
        return layer, -layer + r
    elif q == 1:
        return layer - r, layer
    elif q == 2:
        return -layer, layer - r
    else:
        return -layer + r, -layer

def move(x, y):
    rev = {'L': 'R', 'R': 'L', 'U': 'D', 'D': 'U'}
    s = max(x, 0) * 'R' + max(-x, 0) * 'L' + max(y, 0) * 'U' + max(-y, 0) * 'D'
    res = ''
    for i in range(0, len(s) - 1, 2):
        res += s[i] + rev[s[i]] + s[i] + s[i + 1]
    if len(s) % 2:
        res += s[-1] + rev[s[-1]] + s[-1]
    return res

def move_rev(x, y):
    return move(x, y)[::-1]

s, t = map(int, input().split())
x0, y0 = pos(s)
x1, y1 = pos(t)
if (s + t) % 2 == 0:
    if s % 2 == 0:
        adj = 'DU'
    else:
        adj = ''
    ans = move(-x0, -y0) + 'RUL' + adj + move_rev(x1, y1 - 1)
else:
    ans = move(x1 - x0, y1 - y0)
print(0)
print(len(ans))
print(ans)