#include <iostream>

int main() {

    int n1      = 1;    // Number 1
    int n2      = 1;    // Number 2
    int temp    = 0;    // Temporary variable
    int total   = 0;    // Sum of sequence

    // While the current number in the fibonacci sequence is less than 4000000, consider the value
    while ((temp = n1 + n2) < 4000000) {
        n1 = n2;
        n2 = temp;

        // If even
        if (n2 % 2 == 0) {
            total += n2;
        }
    }

    std::cout << "TOTAL: " << total << std::endl;
    return 0;
}