# https://yukicoder.me/problems/no/2228

def append(answer, targets):
    for t in targets:
        answer.append(t)

def main():
    T  = int(input())

    # 1回目の移動(1, 1) -> (2, 2)
    answer = [] 
    
    append(answer, ["D", "D", "U", "R"])
    # 2回目の移動(2, 2) -> (3, 3)
    append(answer, ["D", "D", "U", "R"])
    while len(answer) < T:
        # 3回目の移動
        append(answer, ["R", "R", "L", "U"])
        # 4回目の移動
        append(answer, ["R", "U", "L", "L"])
        # 5回目の移動
        append(answer, ["L", "L", "R", "D"])
        # 6回目の移動
        append(answer, ["D", "D", "U", "R"])

    answer0 = []
    for i in range(T):
        answer0.append(answer[i])
    print("".join(answer0))



    
if __name__ == "__main__":
    main()