题解 | #MP3光标位置#

def func(num,coms):
    dic = {'U':-1,'D':1}
    cur = 1
    start = 1
    end = 4
    if num<=4:
        print(*[i for i in range(1,num+1)])
        for com in coms:
            cur += dic[com]
            if cur == 0:
                cur = num
            elif cur >num:
                cur = 1
    else:
        for com in coms:
            cur += dic[com]
            if cur == 0:
                cur = num
                start = num-3
                end = num
            elif cur >num:
                cur = 1
                start = 1
                end = 4
            if cur not in range(start,end+1):
                start += dic[com]
                end += dic[com]
        print(*[i for i in range(start,end+1)])
    print(cur)
while 1:
    try:
        num = int(input())
        coms = input()
        func(num,coms)
    except:
        break