<reponame>canis/euler-py
"""
Problem 2
-----------
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.
"""

a = b = 1
s = 0
while b < 4000000:
    a, b = b, a+b
    if a%2 == 0:
        s += a
print (s)

"""
Problem 2
-----------
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.
"""

a = b = 1
s = 0
while b < 4000000:
    a, b = b, a+b
    if a%2 == 0:
        s += a
print (s)
Problem 2 ----------- 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.