HuyNHP-3.5

i = 5
if i == 1:
    print('January 31')
elif i == 2:
    print('February 28')
elif i == 3:
    print('March 31')
elif i == 4:
    print('April 30')
elif i == 5:
    print('May 31')
elif i == 6:
    print('June 30')
elif i == 7:
    print('July 31')
elif i == 8:
    print('August 31')
elif i == 9:
    print('September 30')
elif i == 10:
    print('October 31')
elif i == 11:
    print('November 30')
elif i == 12:
    print('December 31')
else:
    print('Out of month')