Baekjoon 2920번(python)

da = list(map(int, input().split()))

is_mixed = False
for i in range(len(da) - 1):
    if(abs((da[i] - da[i + 1])) != 1):
        is_mixed = True

if(not is_mixed):
    if(da[0] == 8):
        print('descending')
    else:
        print('ascending')
else:
    print('mixed')