long long get_score(vector<cache> &sol){
    int i; request req; long long res=0;

    map<int,bool> mp[1010];

    for (i=0; i<C; i++){
        mp[i].clear();
        for (int vid:sol[i].videos) mp[i][vid]=1;
    }

    for (i=0; i<R; i++){
        bool found=0;
        req=requests[i];
        for (connection cnct:epoints[req.e_point].cnct){
            if (mp[cnct.dest].count(req.video)){
                res+=1LL*req.nr*cnct.lat;
                found=1;
                break;
            }
        }

        if (!found) res+=1LL*epoints[req.e_point].data_serv_lat*req.nr;
    }

    return res;
}