def pos(a):
    r = int(a**0.5)
    if r%2==0: r -= 1
    x,y = r//2,-(r//2)
    if r*r == a: return x,y
    a -= r*r+1
    x += 1
    if a <= r:
        return x,y+a
    a -= r
    y += r
    if a <= r+1:
        return x-a,y
    a -= r+1
    x -= r+1
    if a <= r+1:
        return x,y-a
    a -= r+1
    y -= r+1
    if a <= r+1:
        return x+a,y

def num(x,y):
    v = max(abs(x),abs(y))
    a = (2*v+1)*(2*v+1)
    if x==v and y==-v: return a
    if y==-v:
        return a-(v-x)
    a -= 2*v
    if x==-v:
        return a-(y+v)
    a -= 2*v
    if y==v:
        return a-(x+v)
    a -= 2*v
    return a-(v-y)

def check(s,t,res):
    sx,sy = pos(s)
    for i in res:
        dx,dy = [(-1,0),(1,0),(0,1),(0,-1)]["LRUD".index(i)]
        sx += dx
        sy += dy
        s ^= num(sx,sy)
    assert num(sx,sy) == t
    assert s==0
    return
    
def go(dx,dy):
    #print(dx,dy,(dx+dy)%2,"dx,dy")
    #assert (dx+dy)%2 == 1
    res = []
    while 1:
        if dx > 0:
            res += ["R","L","R"]
            dx -= 1
        elif dx < 0:
            res += ["L","R","L"]
            dx += 1
        elif dy > 0:
            res += ["U","D","U"]
            dy -= 1
        elif dy < 0:
            res += ["D","U","D"]
            dy += 1
        if dx==0 and dy==0: break
        if dx > 0:
            res += ["R"]
            dx -= 1
        elif dx < 0:
            res += ["L"]
            dx += 1
        elif dy > 0:
            res += ["U"]
            dy -= 1
        elif dy < 0:
            res += ["D"]
            dy += 1
    return res

s,t = map(int,input().split())
sx,sy = pos(s)
tx,ty = pos(t)
if (sx+sy+tx+ty)%2:
    res = go(tx-sx,ty-sy)
else:
    if (sx+sy)%2 == 0:
        res = go(1-sx,-sy) #今2
        res += ["L","R","U","D"]#今2
        res += go(tx-1,ty)
    else:
        res = go(-sx,-sy) #今1
        res += ["R","U","D","L","R","L"]#今1
        res += go(tx,ty)

print(0)
print(len(res))
print("".join(res))