题解 | #有序序列判断#

num_list1 = list(map(int, input().split()))
num_list2 = list(map(int, input().split()))
#print(num_list2)
sort_list = sorted(num_list2)
rev_list  = sort_list[::-1]
#print(num_list3)
sort_not_eql = False
rev_not_eql = False

for i in range(len(num_list2)):
    if num_list2[i] != sort_list[i]:
        sort_not_eql = True


for i in range(len(num_list2)):
    if num_list2[i] != rev_list[i]:
        rev_not_eql = True


if rev_not_eql and sort_not_eql :
    print("unsorted")
else:
    print("sorted")