bai 3 - 5

m = 2

if m in range(1,13):
    print('xxx')
else:
    print('xxxyyyxxx')
    
if m == 1:
    print('Jannuary : 31 days')
elif m == 2:
    print('February : 28 days')
elif m == 3:
    print('March : 31 days')
elif m == 4:
    print('April : 30 days')
elif m == 5:
    print('May : 31 days')
elif m == 6:
    print('Jun : 30 days')
elif m == 7:
    print('July : 31 days')
elif m == 8:
    print('August : 31 days')
elif m == 9:
    print('September : 30 days')
elif m == 10:
    print('October : 31 days')
elif m == 11:
    print('November : 30 days')
elif m == 12:
    print('December : 31 days')