mod = 1000000007
eps = 10**-9


def main():
    import sys
    input = sys.stdin.readline

    def XY(n):
        if n == 1:
            return 0, 0
        for i in range(1, 10**5, 2):
            if i ** 2 >= n:
                k = i
                break
        C = k**2 - (k-2)**2
        RD = k ** 2
        LD = RD - C // 4
        LU = LD - C // 4
        RU = LU - C // 4
        if n <= RU:
            return k//2, k//2 - (RU - n)
        elif RU < n <= LU:
            return -(k//2) + (LU - n), k//2
        elif LU < n <= LD:
            return -(k//2), -(k//2) + (LD - n)
        else:
            return k//2 - (RD - n), -(k//2)

    def move(sx, sy, tx, ty):
        assert (abs(tx - sx) + abs(ty - sy))%2 == 0
        ret = []
        if abs(tx - sx) & 1:
            ret.append("ULRL")
            sx -= 1
            sy += 1
        if tx < sx:
            for _ in range((sx - tx) // 2):
                ret.append("LLRL")
        if tx > sx:
            for _ in range((tx - sx) // 2):
                ret.append("RRLR")

        if ty < sy:
            for _ in range((sy - ty) // 2):
                ret.append("DDUD")
        if ty > sy:
            for _ in range((ty - sy) // 2):
                ret.append("UUDU")
        return ret

    s, t = map(int, input().split())
    sx, sy = XY(s)
    tx, ty = XY(t)
    ans = ["RLR"]
    sx += 1
    if abs(s-t) % 2 == 1:
        ans.extend(move(sx, sy, tx, ty))
    else:
        if s % 2 == 1:
            ans.extend(move(sx, sy, -1, 0))
            ans.append("RRU")
            ans.extend(move(1, 1, tx, ty))
        else:
            ans.extend(move(sx, sy, -1, 1))
            ans.append("DDLDDRUU")  # sample 3
            ans.extend(move(0, -1, tx, ty))
    ANS = "".join(ans)
    assert len(ANS) <= 200000
    print(0)
    print(len(ANS))
    print(ANS)


if __name__ == '__main__':
    main()