Category Archives: Euler Problems

Link: https://www.hackerrank.com/contests/projecteuler/challenges/euler002/problem If you don’t understand, you can reply in comments. #include <iostream> using namespace std; int main(){     int t;     cin >> t;     for(int a0 = 0; a0 < t; a0++){         long n;         cin >> n;         long long int a = 1,b = 2,c = 0, sum = 0;         while(b < n)         {             if(b%2==0)             sum+=b;             c=a+b;             a=b;             b=c;         }         cout << sum << endl;     }   return 0; }