0002

http://projecteuler.net/problems

#include<iostream>using namespace std;int main(){ int sum=0,temp1=0,temp2=1;int cnt=1;for(int i=0;i<4000000;i++){cnt++;temp1+=temp2;temp2+=temp1;if(temp2>4000000)break;sum+=temp1%2==0?temp1:0+temp2%2==0?temp2:0;}cout<<sum<<endl;return 0;}