# Program to compute the sum of the first n numbers
# Matt Bishop, January 26, 2012
# for ECS 10 Winter 2012

def main():
        # initialize variables
        total = 0
	
        # read how high we are to count
        try:
                n = int(input("Please enter a number: "))
        except:
                print("You need to enter a number")
                return
	
        # loop over the first n numbers,
        # adding them as we go
        for i in range(1,n+1):
        	total = total + i
	
        # print out the total
        print("The total of the first", n, "positive numbers is", total)


main()