#include <iostream>
using namespace std;
int main()
{ int j,a,s=0;
  for (j=0; j<6; j++)
  { cout <<"a_"<<j+1<<" = ";
    cin >> a;
    if (a%5==0) s=s+a;
  }
  cout <<"Answer: "<<s;
  return 0;
}