from collections import defaultdict, deque
from sys import stdin

readline = stdin.readline


def li():
    return list(map(int, readline().split()))


first_steps = 'RRRDDDDL'
loop_steps = 'LLUUUURRRRDDDDLL'
T = int(input())

ans = []
for i in range(T):
    if i < len(first_steps):
        ans.append(first_steps[i])
    else:
        index = i - len(first_steps)
        index = index % len(loop_steps)
        ans.append(loop_steps[index])
print(''.join(ans))