# Program to compute the sum of the first n numbers
# Matt Bishop, Apr. 2, 2009
# for ECS 10 Spring 2009
def main():
	# initialize variables
	total = 0;
	
	# read how high we are to count
	n = input("Please enter a number:");
	
	# loop over the first n numbers,
	# adding them as we go
	for i in range(n):
		total = total + i;
		
	# print out the total
	print "The total of the first", n, "numbers is", total;
	
main()