#include<bits/stdc++.h>
#include<atcoder/all>
#define rep(i,b) for(int i=0;i<b;i++)
#define rrep(i,b) for(int i=b-1;i>=0;i--)
#define rep1(i,b) for(int i=1;i<b;i++)
#define repx(i,x,b) for(int i=x;i<b;i++)
#define rrepx(i,x,b) for(int i=b-1;i>=x;i--)
#define fore(i,a) for(auto& i:a)
#define rng(x) (x).begin(), (x).end()
#define rrng(x) (x).rbegin(), (x).rend()
#define sz(x) ((int)(x).size())
#define pb push_back
#define fi first
#define se second
#define pcnt __builtin_popcountll

using namespace std;
using namespace atcoder;

using ll = long long;
using ld = long double;
template<typename T> using mpq = priority_queue<T, vector<T>, greater<T>>;
template<typename T> bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<typename T> bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
template<typename T> ll sumv(const vector<T>&a){ll res(0);for(auto&&x:a)res+=x;return res;}
bool yn(bool a) { if(a) {cout << "Yes" << endl; return true;} else {cout << "No" << endl; return false;}}
#define retval(x) {cout << #x << endl; return;}
#define cout2(x,y) cout << x << " " << y << endl;
#define coutp(p) cout << p.fi << " " << p.se << endl;
#define out cout << ans << endl;
#define outd cout << fixed << setprecision(20) << ans << endl;
#define outm cout << ans.val() << endl;
#define outv fore(yans , ans) cout << yans << "\n";
#define outdv fore(yans , ans) cout << yans.val() << "\n";
#define assertmle(x) if (!(x)) {vi v(3e8);}
#define asserttle(x) if (!(x)) {while(1){}}
#define coutv(v) {fore(vy , v) {cout << vy << " ";} cout << endl;}
#define coutv2(v) fore(vy , v) cout << vy << "\n";
#define coutvm(v) {fore(vy , v) {cout << vy.val() << " ";} cout << endl;}
#define coutvm2(v) fore(vy , v) cout << vy.val() << "\n";
using pll = pair<ll,ll>;using pil = pair<int,ll>;using pli = pair<ll,int>;using pii = pair<int,int>;using pdd = pair<ld,ld>;
using vi = vector<int>;using vd = vector<ld>;using vl = vector<ll>;using vs = vector<string>;using vb = vector<bool>;
using vpii = vector<pii>;using vpli = vector<pli>;using vpll = vector<pll>;using vpil = vector<pil>;
using vvi = vector<vector<int>>;using vvl = vector<vector<ll>>;using vvs = vector<vector<string>>;using vvb = vector<vector<bool>>;
using vvpii = vector<vector<pii>>;using vvpli = vector<vector<pli>>;using vvpll = vector<vpll>;using vvpil = vector<vpil>;
using mint = modint998244353;
//using mint = modint1000000007;
//using mint = dynamic_modint<0>;
using vm = vector<mint>;
using vvm = vector<vector<mint>>;
vector<int> dx={1,0,-1,0,1,1,-1,-1},dy={0,1,0,-1,1,-1,1,-1};
ll gcd(ll a, ll b) { return a?gcd(b%a,a):b;}
ll lcm(ll a, ll b) { return a/gcd(a,b)*b;}
#define yes {cout <<"Yes"<<endl;}
#define no {cout <<"No"<<endl;}
const double eps = 1e-10;
const ll LINF = 1001002003004005006ll;
const int INF = 1001001001;
#ifdef MY_LOCAL_DEBUG
#include "./debug/localDebug.cpp"
#define showp(p) cerr<<#p<<" = "<<p.fi<<" : "<<p.se<<endl
#define show1(a) cerr<<#a<<" = "<<a<<endl
#define show2(a,b) cerr<<#a<<" = "<<a<<" : "<<#b<<" = "<<b<<endl
#define show3(a,b,c) cerr<<#a<<" = "<<a<<" : "<<#b<<" = "<<b<<" : "<<#c<<" = "<<c<<endl
#define show4(a,b,c,d) cerr<<#a<<" = "<<a<<" : "<<#b<<" = "<<b<<" : "<<#c<<" = "<<c<<" : "<<#d<<" = "<<d<<endl
#define show5(a,b,c,d,e) cerr<<#a<<" = "<<a<<" : "<<#b<<" = "<<b<<" : "<<#c<<" = "<<c<<" : "<<#d<<" = "<<d<<" : "<<#e<<" = "<<e<<endl
#define DEBUG_LINE cout << "DEBUG_LINE : " << __LINE__ << endl
#define showv(v) {cout<<#v<<" : "; fore(vy , v) {cout << vy << " ";} cout << endl;}
#define showv2(v) {cout<<#v<<endl; fore(vy , v) cout << vy << "\n";}
#define showvm(v) {cout<<#v<<" : "; fore(vy , v) {cout << vy.val() << " ";} cout << endl;}
#define showvm2(v) {cout<<#v<<endl; fore(vy , v) cout << vy.val() << "\n";}
#define showmat(v) {cout<<#v<<endl; fore(row , v) { fore(seg , row) cout << seg << " "; cout << endl;}}
#define showmatm(v) {cout<<#v<<endl; fore(row , v) { fore(seg , row) cout << seg.val() << " "; cout << endl;}}
#else
#define showp(p)
#define show1(a)
#define show2(a,b)
#define show3(a,b,c)
#define show4(a,b,c,d)
#define show5(a,b,c,d,e)
#define DEBUG_LINE
#define showv(v)
#define showv2(v)
#define showvm(v)
#define showvm2(v)
#define showmat(v)
#define showmatm(v)
#endif
#define overload5(a,b,c,d,e,f, ...) f
#define show(...) overload5(__VA_ARGS__, show5, show4, show3, show2, show1)(__VA_ARGS__)

struct HeavyLightDecomposition{
private:
    int _n;
    vvi _e;
    vi _size, _depth, _nxt, _par; // _nxt[x] : 頂点xと同じHeavyパスに含まれる頂点のうち、最も根に近い頂点の番号
    vi _up; // _up[x] : オイラ-ツアーにおける頂点xの帰りがけ時の順序番号。詳細は_dfs_hldを見る。
public:
    vi down;// down[x] : オイラ-ツアーにおける頂点xの行きがけ時の順序番号。

    HeavyLightDecomposition(const vvi& _e, int root = 0) : _e(_e){
        _n = sz(_e);
        _id = 0;
        _size = vi(_n);
        _depth = vi(_n);
        down = vi(_n,-1);
        _up = vi(_n,-1);
        _nxt = vi(_n,root);
        _par = vi(_n,root);

        _dfs_sz(root);
        _dfs_hld(root);
    }

private:
    int _id;
    void _dfs_sz(int x){
        _size[x] = 1;
        for(int& y : _e[x]){
            if (y == _par[x]){
                if (sz(_e[x])>=2 && y==_e[x][0]){
                    swap(_e[x][0], _e[x][1]);
                }else{
                    continue;
                }
            }
            _depth[y] = _depth[x] + 1;
            _par[y] = x;
            _dfs_sz(y);
            _size[x] += _size[y];
            if (_size[y] > _size[_e[x][0]]) swap(y, _e[x][0]);
        }
    }

    void _dfs_hld(int x)
    {
        down[x] = _id++;
        for (int& y : _e[x])
        {
            if (y == _par[x]) continue;
            _nxt[y] = (y == _e[x][0]) ? _nxt[x] : y;
            _dfs_hld(y);
        }
        _up[x] = _id;
    }

    // [u, v)
    vpii _ascend(int a, int b) const {
        vpii res;
        while (_nxt[a]!=_nxt[b]){
            res.emplace_back(down[a], down[_nxt[a]]);
            a = _par[_nxt[a]];
        }
        if (a != b) res.emplace_back(down[a], down[b] + 1);
        return res;
    }

    // (u, v]
    vpii _descend(int a, int b) const {
        if (a == b) return {};
        if (_nxt[a] == _nxt[b]) return {{down[a] + 1, down[b]}};
        vpii res = _descend(a, _par[_nxt[b]]);
        res.emplace_back(down[_nxt[b]], down[b]);
        return res;
    }

public:
    template <typename F>
    void path_query(int u, int v, bool vertex, const F &f)
    {
        int l = lca(u, v);
        for (auto &&[a, b] : _ascend(u, l)){
            int s = a + 1, t = b;
            s > t ? f(t, s) : f(s, t);
        }
        if (vertex) f(down[l], down[l] + 1);
        for (auto &&[a, b] : _descend(l, v)){
            int s = a, t = b + 1;
            s > t ? f(t, s) : f(s, t);
        }
    }

    template <typename F>
    void subtree_query(int u, bool vertex, const F &f){
        f(down[u] + int(!vertex), _up[u]);
    }

    int lca(int a, int b){
        while (_nxt[a] != _nxt[b]){
            if (down[a] < down[b]) swap(a, b);
            a = _par[_nxt[a]];
        }
        return _depth[a] < _depth[b] ? a : b;
    }

    int dist(int a, int b) { return _depth[a] + _depth[b] - _depth[lca(a, b)] * 2; }
};

// HeavyLightDecomposition
// [remark]
// HLD分解。木をオイラーツアーで列化し効率的に分解する。
// クエリを適用したい列データ構造(セグ木など)は本クラスとは別に持ち、ラムダ式などを介して作用させる。
// 頂点・辺の双方に対応している。辺に適用する場合は辺を子側頂点に連動させると考えやすくなる。
//
// [interface]
// HeavyLightDecomposition(const vvi& _e, int root = 0) : eは木の隣接頂点リスト,rootは根
// path_query(int u, int v, bool vertex, const F &f) : パス[u,v]にクエリfを適用させる。vertexは頂点に対するクエリかどうか。
// void subtree_query(int u, bool vertex, const F &f) : 頂点uの部分木にクエリfを適用させる。
// int lca(a,b) : a,bのlca
// int dist(int a, int b) : パス[a,b]の長さ

ll op(ll a,ll b) {
    return max(a,b);
}
ll ee(){
    return 0;
}

void solve(){
    ll n,k,c; cin>>n>>k>>c;
    vl u(k),v(k),w(k),p(k);
    vpli ed(k);
    rep(i,k){
        cin>>u[i]>>v[i]>>w[i]>>p[i];
        u[i]--;
        v[i]--;
        ed[i] = {w[i], i};
    }
    dsu d(n);
    sort(rng(ed));
    ll sum = 0;
    ll mx = 0;
    vvi e(n);
    vi idx;
    fore(y, ed){
        int a = u[y.se];
        int b = v[y.se];
        if (d.same(a,b)) continue;
        d.merge(a,b);
        sum += w[y.se];
        e[a].pb(b);
        e[b].pb(a);
        idx.pb(y.se);
        chmax(mx, p[y.se]);
    }
    if (sum > c) retval(-1);
    HeavyLightDecomposition hld(e);
    segtree<ll,op,ee> sg(n);
    fore(y , idx){
        int id = max(hld.down[u[y]], hld.down[v[y]]) - 1;
        sg.set(id, w[y]);
    }
    ll ans = mx;
    rep(i,k){
        ll pro = 0;
        auto f = [&](ll a,ll b)->void{
            chmax(pro, sg.prod(a-1,b-1));
        };
        int a = u[i];
        int b = v[i];
        hld.path_query(a,b,false,f);
        if (sum + (w[i] - pro) > c) continue;
        chmax(ans, p[i]);
    }
    out;

    return;
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);

    int t = 1;
    //cin>>t;

    rep(i,t){
        solve();
    }

    return 0;
}