num_songs=int(input())
orders=input()
SHOW=1
p=1
for order_i in orders:
    if order_i=="U":
        SHOW-=1
        if SHOW<=0:
            SHOW=num_songs
            p=4
        else:
            p-=1
    if order_i=="D":
        SHOW+=1
        if SHOW>10:
            SHOW=1
            p=1
        else:
            p+=1


if p==1:
    print(SHOW,SHOW+1,SHOW+2,SHOW+3)
elif p==2:
    print(SHOW-1,SHOW,SHOW+1,SHOW+2)
elif p==3:
    print(SHOW-2,SHOW-1,SHOW,SHOW+1)
elif p==4:
    print(SHOW-3,SHOW-2,SHOW-1,SHOW)
print(SHOW)

第一道编程，哪错了？