#gaynor thomas 1703140
#Jasitharan Kugathasan P151435
#Question 3 

print("Hello")
userInput = 0
counter = 0
add = 1

while userInput != -1:
        if userInput > 0:
            userInput = int(input("Enter Number (-1 to exit): "))
            add = add + userInput
            
        else:
            userInput = 1
            

print("Your Total is {0}".format(add))
print("Goodbye")