#!/usr/bin/env python3

sx, sy, tx, ty = map(int, input().split())

x = tx - sx

y = ty - sy

h = abs(sx - tx)

v = abs(sy - ty)

if h * v > 0:

    ans = [[1, 0]] * h + [[0, 1]] * v + [[-1, 0]] * h + [[0, -1]] * v

    ans += [[0, -1]] + [[1, 0]] * -~h + [[0, 1]] * -~v + [[-1, 0]]

    ans += [[0, 1]] + [[-1, 0]] * -~h + [[0, -1]] * -~v + [[1, 0]]

elif h < 1:

    ans = [[0, 1]] * v

    ans += [[1, 0]] + [[0, -1]] * v + [[-1, 0]]

    ans += [[-1, 0]] + [[0, 1]] * v + [[1, 0]]

    ans += [[0, 1]] + [[1, 0]] * 2 + [[0, -1]] * \

        (v + 2) + [[-1, 0]] * 2 + [[0, 1]] * 2

elif v < 1:

    ans = [[1, 0]] * h

    ans += [[0, 1]] + [[-1, 0]] * h + [[0, -1]]

    ans += [[0, -1]] + [[1, 0]] * h + [[0, 1]]

    ans += [[1, 0]] + [[0, 1]] * 2 + [[-1, 0]] * \

        (h + 2) + [[0, -1]] * 2 + [[1, 0]] * 2



if x < 0 and y < 0:

    ans = [*map(lambda x: [-x[0], -x[1]], ans)]

elif x < 0:

    ans = [*map(lambda x: [-x[1], x[0]], ans)]

elif y < 0:

    ans = [*map(lambda x: [x[1], -x[0]], ans)]



for i in ans:

    if i == [1, 0]:

        print("R", end="")

    elif i == [-1, 0]:

        print("L", end="")

    elif i == [0, 1]:

        print("U", end="")

    else:

        print("D", end="")

print("")

#!/usr/bin/env python3

sx, sy, tx, ty = map(int, input().split())

x = tx - sx

y = ty - sy

h = abs(sx - tx)

v = abs(sy - ty)

ans = [[1, 0]] * h + [[0, 1]] * v + [[-1, 0]] * h + [[0, -1]] * v

ans += [[0, -1]] + [[1, 0]] * -~h + [[0, 1]] * -~v + [[-1, 0]]

ans += [[0, 1]] + [[-1, 0]] * -~h + [[0, -1]] * -~v + [[1, 0]]

if x < 0 and y < 0:

    ans = [*map(lambda x: [-x[0], -x[1]], ans)]

elif x < 0:

    ans = [*map(lambda x: [-x[1], x[0]], ans)]

elif y < 0:

    ans = [*map(lambda x: [x[1], -x[0]], ans)]



for i in ans:

    if i == [1, 0]:

        print("R", end="")

    elif i == [-1, 0]:

        print("L", end="")

    elif i == [0, 1]:

        print("U", end="")

    else:

        print("D", end="")

print("")

#!/usr/bin/env python3
sx, sy, tx, ty = map(int, input().split())
x = tx - sx
y = ty - sy
h = abs(sx - tx)
v = abs(sy - ty)
if h * v > 0:
    ans = [[1, 0]] * h + [[0, 1]] * v + [[-1, 0]] * h + [[0, -1]] * v
    ans += [[0, -1]] + [[1, 0]] * -~h + [[0, 1]] * -~v + [[-1, 0]]
    ans += [[0, 1]] + [[-1, 0]] * -~h + [[0, -1]] * -~v + [[1, 0]]
elif h < 1:
    ans = [[0, 1]] * v
    ans += [[1, 0]] + [[0, -1]] * v + [[-1, 0]]
    ans += [[-1, 0]] + [[0, 1]] * v + [[1, 0]]
    ans += [[0, 1]] + [[1, 0]] * 2 + [[0, -1]] * (v + 2) + [[-1, 0]] * 2 + [[0, 1]] * 2
elif v < 1:
    ans = [[1, 0]] * h
    ans += [[0, 1]] + [[-1, 0]] * h + [[0, -1]]
    ans += [[0, -1]] + [[1, 0]] * h + [[0, 1]]
    ans += [[1, 0]] + [[0, 1]] * 2 + [[-1, 0]] * (h + 2) + [[0, -1]] * 2 + [[1, 0]] * 2
if x < 0 and y < 0:
    ans = [*map(lambda x: [-x[0], -x[1]], ans)]
elif x < 0:
    ans = [*map(lambda x: [-x[1], x[0]], ans)]
elif y < 0:
    ans = [*map(lambda x: [x[1], -x[0]], ans)]
for i in ans:
    if i == [1, 0]:
        print("R", end="")
    elif i == [-1, 0]:
        print("L", end="")
    elif i == [0, 1]:
        print("U", end="")
    else:
        print("D", end="")
print("")

#!/usr/bin/env python3
sx, sy, tx, ty = map(int, input().split())
x = tx - sx
y = ty - sy
h = abs(sx - tx)
v = abs(sy - ty)
ans = [[1, 0]] * h + [[0, 1]] * v + [[-1, 0]] * h + [[0, -1]] * v
ans += [[0, -1]] + [[1, 0]] * -~h + [[0, 1]] * -~v + [[-1, 0]]
ans += [[0, 1]] + [[-1, 0]] * -~h + [[0, -1]] * -~v + [[1, 0]]
if x < 0 and y < 0:
    ans = [*map(lambda x: [-x[0], -x[1]], ans)]
elif x < 0:
    ans = [*map(lambda x: [-x[1], x[0]], ans)]
elif y < 0:
    ans = [*map(lambda x: [x[1], -x[0]], ans)]
for i in ans:
    if i == [1, 0]:
        print("R", end="")
    elif i == [-1, 0]:
        print("L", end="")
    elif i == [0, 1]:
        print("U", end="")
    else:
        print("D", end="")
print("")

-if h * v > 0: -    ans = [[1, 0]] * h + [[0, 1]] * v + [[-1, 0]] * h + [[0, -1]] * v -    ans += [[0, -1]] + [[1, 0]] * -~h + [[0, 1]] * -~v + [[-1, 0]] -    ans += [[0, 1]] + [[-1, 0]] * -~h + [[0, -1]] * -~v + [[1, 0]] -elif h < 1: -    ans = [[0, 1]] * v -    ans += [[1, 0]] + [[0, -1]] * v + [[-1, 0]] -    ans += [[-1, 0]] + [[0, 1]] * v + [[1, 0]] -    ans += [[0, 1]] + [[1, 0]] * 2 + [[0, -1]] * (v + 2) + [[-1, 0]] * 2 + [[0, 1]] * 2 -elif v < 1: -    ans = [[1, 0]] * h -    ans += [[0, 1]] + [[-1, 0]] * h + [[0, -1]] -    ans += [[0, -1]] + [[1, 0]] * h + [[0, 1]] -    ans += [[1, 0]] + [[0, 1]] * 2 + [[-1, 0]] * (h + 2) + [[0, -1]] * 2 + [[1, 0]] * 2 +ans = [[1, 0]] * h + [[0, 1]] * v + [[-1, 0]] * h + [[0, -1]] * v +ans += [[0, -1]] + [[1, 0]] * -~h + [[0, 1]] * -~v + [[-1, 0]] +ans += [[0, 1]] + [[-1, 0]] * -~h + [[0, -1]] * -~v + [[1, 0]]