g = int(input('Inserire giorno: '))
m = int(input('Inserire mese: '))
y = int(input('Inserire anno: '))
anno_bisestile = (y % 400 == 0) or (y % 100 != 0 and y % 4 == 0)
if anno_bisestile:
    print('Hai inserito un anno bisestile')
    fb = 29
else:
    fb = 28
p = (m == 4 and 1 <= g <= 30) or (m == 5 and 1 <= g <= 31) or (m == 3 and 21 <= g <= 31) or (m == 6 and 1<= g <= 21)
e = (m == 6 and 22 <= g <= 30) or (m == 7 and 1 <= g <= 31) or (m == 8 and 1<= g <= 31) or (m == 9 and 1 <= g <= 22)
a = (m == 9 and 23 <= g <= 30) or (m == 10 and 1 <= g <= 31) or (m == 11 and 1 <= g <= 30) or (m == 12 and 1 <= g <= 21)
i = (m == 12 and 22 <= g <= 31) or (m == 1 and 1 <= g <= 31) or (m == 2 and 1<= g <= fb) or (m == 3 and 1<= g <= 20)
if p:
    print('primavera')
elif e:
    print('estate')
elif a:
    print('autunno')
elif i:
    print('inverno')
else:
    print('data errata')