---

month = int(input())
if month == 12 or month == 1 or month == 2:
    print("зима")
elif month == 3 or month == 4 or month == 5:
    print("весна")
elif month == 6 or month == 7 or month == 8:
    print("лето")
elif month == 9 or month == 10 or month == 11:
    print("осень")
else:
    print()