#
# This program takes a temperature, in Fahrenheits, as an input. 
# Allows user to re-enter the temperature as many times as he/she wants.
# The program is stopped by pressing Enter without entering any value
#

def main():

    while True: # an infinite loop
        T_s=raw_input("Please input todays temperature (press Enter to quit):")
        if T_s == "":
            print "Have a good day!"
            break # break exits any loop
        
        else :
            T = eval(T_s)
        
            if T >= 90:
                print "It is hot today. Stay out of the sun!\n"
                
            if T < 90 and T >= 70:
                print "It is nice and warm today!\n"
                
            if T < 70 and T >= 32:
                print " It is cold today.\n"
                
            if  T <32:
                print "It is freezing today. Don't forget to wear mittens and hat!\n"

main()