#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.

num1 = 1
num2 = 2
num3 = 0
numsum = 2
while num3 < 4000000:
    num3 = num1 + num2
    if num3 %2 == 0:
        numsum+=num3
    if num1 < num2:
        num1 = num3
    else:
        num2 = num3
print(numsum)
