#include <bits/stdc++.h>
using namespace std;
#define rep2(i, m, n) for (int i = (m); i < (n); ++i)
#define rep(i, n) rep2(i, 0, n)
#define drep2(i, m, n) for (int i = (m)-1; i >= (n); --i)
#define drep(i, n) drep2(i, n, 0)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#ifdef LOCAL
void debug_out() { cerr << endl; }
template <class Head, class... Tail> void debug_out(Head H, Tail... T) { cerr << ' ' << H; debug_out(T...); }
#define debug(...) cerr << 'L' << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define dump(x) cerr << 'L' << __LINE__ << " " << #x << " = " << (x) << endl
#else
#define debug(...) (void(0))
#define dump(x) (void(0))
#endif
template<class T> using V = vector<T>;
template<class T> using P = pair<T, T>;
using ll = long long;
using ld = long double;
using Vi = V<int>;  using VVi = V<Vi>;
using Vl = V<ll>;   using VVl = V<Vl>;
using Vd = V<ld>;   using VVd = V<Vd>;
using Vb = V<bool>; using VVb = V<Vb>;
using Pi = P<int>;
using Pl = P<ll>;
using Pd = P<ld>;
template<class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>;
template<class T> vector<T> make_vec(size_t n, T a) { return vector<T>(n, a); }
template<class... Ts> auto make_vec(size_t n, Ts... ts) { return vector<decltype(make_vec(ts...))>(n, make_vec(ts...)); }
template<class T> inline int sz(const T &x) { return size(x); }
template<class T> inline bool chmin(T &a, const T b) { if (a > b) { a = b; return true; } return false; }
template<class T> inline bool chmax(T &a, const T b) { if (a < b) { a = b; return true; } return false; }
template<class T1, class T2> istream &operator>>(istream &is, pair<T1, T2> &p) { is >> p.first >> p.second; return is; }
template<class T1, class T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p) { os << '(' << p.first << ", " << p.second << ')'; return os; }
template<class T> istream &operator>>(istream &is, vector<T> &v) { for (auto &e : v) is >> e; return is; }
template<class T> ostream &operator<<(ostream &os, const vector<T> &v) { for (auto &e : v) os << e << ' '; return os; }
template<class T, size_t n> istream &operator>>(istream &is, array<T, n> &v) { for (auto &e : v) is >> e; return is; }
template<class T, size_t n> ostream &operator<<(ostream &os, const  array<T, n> &v) { for (auto &e : v) os << e << ' '; return os; }
template<class T> inline void deduplicate(vector<T> &a) { sort(all(a)); a.erase(unique(all(a)), a.end()); }
template<class T> inline int count_between(const vector<T> &a, T l, T r) { return lower_bound(all(a), r) - lower_bound(all(a), l); } // [l, r)
inline ll cDiv(const ll x, const ll y) { return (x+y-1) / y; } // ceil(x/y)
inline int fLog2(const ll x) { assert(x > 0); return 63-__builtin_clzll(x); } // floor(log2(x))
inline int cLog2(const ll x) { assert(x > 0); return (x == 1) ? 0 : 64-__builtin_clzll(x-1); } // ceil(log2(x))
inline int popcount(const ll x) { return __builtin_popcountll(x); }
inline void fail() { cout << -1 << '\n'; exit(0); }
struct fast_ios { fast_ios(){ cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_;
// const int INF  = (1<<30) - 1;
// const ll INFll = (1ll<<60) - 1;
// const ld EPS   = 1e-10;
// const ld PI    = acos(-1.0);


struct edge {
  int a, b;
  ll c, d;
  ld x;
};


struct UnionFind {
  vector<int> d;
  UnionFind(int n=0): d(n, -1) {}
  int find(int x) {
    if (d[x] < 0) return x;
    return d[x] = find(d[x]);
  }
  bool unite(int x, int y) {
    x = find(x); y = find(y);
    if (x == y) return false;
    if (d[x] > d[y]) swap(x,y);
    d[x] += d[y];
    d[y] = x;
    return true;
  }
  bool same(int x, int y) { return find(x) == find(y);}
  int size(int x) { return -d[find(x)];}
};


int main() {
  chrono::system_clock::time_point start, now;

  ll n, m, D; cin >> n >> m >> D;
  ll ansmax = 0;
  vector<edge> E(m);
  for (auto &[a, b, c, d, x] : E) {
    cin >> a >> b >> c >> d;
    --a, --b;
    x = 0;
    ansmax += c * min(d, D);
  }

  ld etamin = 1e-3;
  ld etamax = 1e0;
  ld eta = etamin;
  ld fpre = 0;
  ll ans = 0;
  vector<edge> Ebest;

  start = chrono::system_clock::now();
  const int T = 1e8;
  rep(t, T) {
    sort(begin(E), end(E), [](const auto &a, const auto &b) { return a.c + a.x < b.c + b.x; });
    UnionFind uf(n);
    ld f = 0;
    for (auto &[a, b, c, d, x] : E) {
      if (uf.unite(a, b)) f += D * (c + x);
      f -= d * x;
    }
    if (chmax(ans, llround(f + 0.4))) Ebest = E;
    if (f < fpre) eta *= 0.9;
    else eta *= 1.1;
    eta = clamp(eta, etamin, etamax);

    uf = UnionFind(n);
    for (auto &[a, b, c, d, x] : E) {
      if (uf.unite(a, b)) x += eta * D;
      x -= eta * d;
      chmax(x, ld(0));
    }

    fpre = f;
    if (t % 100000 == 0) debug(t, ans, f, eta);
    if (ans > ansmax) fail();

    now = chrono::system_clock::now();
    auto dur = std::chrono::duration_cast<std::chrono::milliseconds>(now - start).count();
    // debug(dur);
    if (dur > 1800) {
      // debug(t, ans, fi, f, eta);
      cout << ans << '\n';
      break;
    }
  }

  for (auto &[a, b, c, d, x] : Ebest) debug(a, b, c, d, round(x), x);
}