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 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)
    print(res)
else:
    if (sx+sy)%2 == 0:
        res = go(-sx,1-sy) #今2
        res += ["L","R","U","D"]#今2
        res += go(tx,ty-1)
    else:
        res = go(-sx,-sy) #今1
        res += ["R","U","D","L","R","L"]#今2
        res += go(tx,ty)
        
print(0)
print(len(res))
print("".join(res))