yue = int(input("请输入月份:"))
if yue==1 or yue==3 or yue==5 or yue==7 or yue==8 or yue==10 or yue==12:
i = 31
elif yue==4 or yue==9 or yue==6 or yue==11:
i = 30
elif yue==2:
i = 28
else:
i = "输入月份不合法"
print("%d该月有%d"%(yue,i))
yue = int(input("请输入月份:"))
if yue==1 or yue==3 or yue==5 or yue==7 or yue==8 or yue==10 or yue==12:
i = 31
elif yue==4 or yue==9 or yue==6 or yue==11:
i = 30
elif yue==2:
i = 28
else:
i = "输入月份不合法"
print("%d该月有%d"%(yue,i))