#37 백준 파이썬 [2920] 음계

#37 백준[2920] 음계

https://www.acmicpc.net/problem/2920

#Solution

scale_num = list(map(int, input().split()))
if scale_num == [1,2,3,4,5,6,7,8]:
    print("ascending")
elif scale_num == [8,7,6,5,4,3,2,1]:
    print("descending")
else:
    print("mixed")