#Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be:
#1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...
#By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.

def answertwo():
	ans = 0
	a = 1 #First term
	b = 2 #Second term
	while a <= 4000000:
		if a%2 == 0:
			ans += a
		a, b = b, a+b
	return ans
	
if __name__ == "__main__":
	print(answertwo())
	
#Returns 4613732