import sys,random,bisect
from collections import deque,defaultdict
from heapq import heapify,heappop,heappush
from itertools import permutations
from math import gcd,log

input = lambda :sys.stdin.readline().rstrip()
mi = lambda :map(int,input().split())
li = lambda :list(mi())

T = "RDRDRDRDUDULUDULULUL"
U = "RLRDRLRDRDRDUDULUDULULUL"

K = int(input())
res = T
while len(res) < K:
    res += U
res = res[:K]
print(res)