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.

### One Possible Solution: Java

public class Problem2 {
public static void main(String args[]){
int sum = 0;
int a = 0;
int b = 1;
int c = a + b;
while (c < 4000000){
if (c % 2 == 0){
sum = sum + c;
}
a = b;
b = c;
c = a + b;
}
System.out.println(sum);
}
}

### One Possible Soulution: Python

# Python version = 2.7.2
# Platform = win32
def fib(n):
"""Determines the sum of the even numbers in the fibonacci sequence
up to value n"""
thesum = 0
a, b = 0, 1
while a < n:
if a % 2 == 0:
thesum = (thesum + (a))
a, b = b, a + b
return thesum
def main():
"""The main program - calls the fib function and prints the value
returned from the function --> x"""
x = fib(4000000)
print x
if __name__ == '__main__':
main()

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