n,order = int(input()),input() l = [i for i in range(1,n+1)] # 生成mp3整体列表 begin,end = l[0],l[-1] now_p = 1 now_l = l[:4] for i in range(len(order)): if order[i] == 'U' and now_p==begin: now_p = end now_l = l[-4:] elif order[i] == 'U' and now_p!=begin: if now...