#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;
using uint = unsigned int;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pdd = pair<double, double>;
using tuplis = array<ll, 3>;
template<class T> using pq = priority_queue<T, vector<T>, greater<T>>;
const int INF = 0x3fffffff;
const ll MINF = 0x7fffffffffff;
const ll LINF = 0x1fffffffffffffff;
const ld DINF = numeric_limits<ld>::infinity();
const int MOD = 1000000007;
const int MODD = 998244353;
const ld EPS = 1e-9;
const ld PI = 3.1415926535897932;
const ll four[] = {0, 1, 0, -1, 0};
const ll eight[] = {0, 1, 1, 0, -1, -1, 1, -1, 0};
#define overload4(_1, _2, _3, _4, name, ...) name
#define rep1(n) for(ll i = 0; i < (n); ++i)
#define rep2(i, n) for(ll i = 0; i < (n); ++i)
#define rep3(i, a, b) for(ll i = (a); i < (b); ++i)
#define rep4(i, a, b, c) for(ll i = (a); i < (b); i += (c))
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)
#define rrep1(n) for(ll i = (n); i --> 0; )
#define rrep2(i, n) for(ll i = (n); i --> 0; )
#define rrep3(i, a, b) for(ll i = (b); i --> (a); )
#define rrep4(i, a, b, c) for(ll i = (b); (i -= (c)) >= (a); )
#define rrep(...) overload4(__VA_ARGS__, rrep4, rrep3, rrep2, rrep1)(__VA_ARGS__)
#define each(i,...) for(auto&& i:__VA_ARGS__)
#define all(...) begin(__VA_ARGS__), end(__VA_ARGS__)
#define vec(type,name,...) vector<type> name(__VA_ARGS__)
#define vv(type,name,h,...) vector<vector<type>>name(h,vector<type>(__VA_ARGS__))
#define vvv(type,name,h,w,...) vector<vector<vector<type>>>name(h,vector<vector<type>>(w,vector<type>(__VA_ARGS__)))
#define INT(...) int __VA_ARGS__; in(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__; in(__VA_ARGS__)
#define ULL(...) ull __VA_ARGS__; in(__VA_ARGS__)
#define STR(...) string __VA_ARGS__; in(__VA_ARGS__)
#define CHR(...) char __VA_ARGS__; in(__VA_ARGS__)
#define DBL(...) double __VA_ARGS__; in(__VA_ARGS__)
#define LD(...) ld __VA_ARGS__; in(__VA_ARGS__)
#define VEC(type,name,size) vector<type> name(size); in(name)
#define VV(type, name, h, w) vector<vector<type>> name(h, vector<type>(w)); in(name)
template<class T> bool chmin(T &a, const T &b){ if(a > b){ a = b; return 1; } else return 0; }
template<class T> bool chmax(T &a, const T &b){ if(a < b){ a = b; return 1; } else return 0; }
template<class T> ll sum(const T& a){ return accumulate(all(a), 0LL); }
template<class T> ld dsum(const T& a){ return accumulate(all(a), 0.0L); }
template<class T> auto min(const T& a){ return *min_element(all(a)); }
template<class T> auto max(const T& a){ return *max_element(all(a)); }
ll gcd(ll a, ll b){ while(b){ ll c = b; b = a % b; a = c; } return abs(a); }
ll lcm(ll a, ll b){ if(!a || !b) return 0; return a * b / gcd(a, b); }
ll intpow(ll a, ll b){ ll ans = 1; while(b){ if(b & 1) ans *= a; a *= a; b /= 2; } return ans; }
vector<pll> factor(ll x){ vector<pll> ans; for(ll i = 2; i * i <= x; i++) if(x % i == 0){ ans.push_back({i, 1}); while((x /= i) % i == 0) ans.back().second++; } if(x != 1) ans.push_back({x, 1}); return ans; }
vector<ll> divisor(ll x){ vector<ll> ans; for(ll i = 1; i * i <= x; i++) if(x % i == 0) ans.push_back(i); rrep(ans.size() - (ans.back() * ans.back() == x)) ans.push_back(x / ans[i]); return ans; }
int scan(){ return getchar(); }
void scan(int& a){ scanf("%d", &a); }
void scan(unsigned& a){ scanf("%u", &a); }
void scan(long long& a){ scanf("%lld", &a); }
void scan(unsigned long long& a){ scanf("%llu", &a); }
void scan(char& a){ do{ a = getchar(); }while(a == ' ' || a == '\n'); }
void scan(float& a){ scanf("%f", &a); }
void scan(double& a){ scanf("%lf", &a); }
void scan(long double& a){ scanf("%Lf", &a); }
void scan(vector<bool>& a){ for(unsigned i = 0; i < a.size(); i++) { int b; scan(b); a[i] = b; } }
void scan(char a[]){ scanf("%s", a); }
void scan(string& a){ cin >> a; }
template<class T> void scan(vector<T>&);
template<class T> void scan(deque<T>&);
template<class T, size_t size> void scan(array<T, size>&);
template<class T, class L> void scan(pair<T, L>&);
template<class T, size_t size> void scan(T(&)[size]);
template<class T> void scan(vector<T>& a){ for(auto& i : a) scan(i); }
template<class T> void scan(deque<T>& a){ for(auto& i : a) scan(i); }
template<class T, size_t size> void scan(array<T, size>& a){ for(auto& i : a) scan(i); }
template<class T, class L> void scan(pair<T, L>& p){ scan(p.first); scan(p.second); }
template<class T, size_t size> void scan(T (&a)[size]){ for(auto& i : a) scan(i); }
template<class T> void scan(T& a){ cin >> a; }
void in(){}
template <class Head, class... Tail> void in(Head& head, Tail&... tail){ scan(head); in(tail...); }
void print(){ putchar(' '); }
void print(bool a){ printf("%d", a); }
void print(int a){ printf("%d", a); }
void print(unsigned a){ printf("%u", a); }
void print(long long a){ printf("%lld", a); }
void print(unsigned long long a){ printf("%llu", a); }
void print(char a){ printf("%c", a); }
void print(char a[]){ printf("%s", a); } //
void print(float a){ printf("%.15f", a); }
void print(double a){ printf("%.15f", a); }
void print(long double a){ printf("%.15Lf", a); }
void print(const string& a){ for(auto&& i : a) print(i); }
template<class T> void print(const vector<T>&);
template<class T, size_t size> void print(const array<T, size>&);
template<class T, class L> void print(const pair<T, L>& p);
template<class T, size_t size> void print(const T (&)[size]);
template<class T> void print(const vector<T>& a){ if(a.empty()) return; print(a[0]); for(auto i = a.begin(); ++i != a.end(); ){ putchar(' '); print(*i); } }
template<class T> void print(const deque<T>& a){ if(a.empty()) return; print(a[0]); for(auto i = a.begin(); ++i != a.end(); ){ putchar(' '); print(*i); } }
template<class T, size_t size> void print(const array<T, size>& a){ print(a[0]); for(auto i = a.begin(); ++i != a.end(); ){ putchar(' '); print(*i); } }
template<class T, class L> void print(const pair<T, L>& p){ print(p.first); putchar(' '); print(p.second); }
template<size_t size> void print(const char (&a)[size]){ for(auto&& i : a) if(i!=EOF)print(i); } //
template<class T, size_t size> void print(const T (&a)[size]){ print(a[0]); for(auto i = a; ++i != end(a); ){ putchar(' '); print(*i); } }
template<class T> void print(const T& a){ cout << a; }
int out(){ putchar('\n'); return 0; }
template<class T> int out(const T& t){ print(t); putchar('\n'); return 0; }
template<class Head, class... Tail> int out(const Head& head, const Tail&... tail){ print(head); putchar(' '); out(tail...); return 0; }
int first(bool i = true){ return out(i?"first":"second"); }
int yes(bool i = true){ return out(i?"yes":"no"); }
int Yes(bool i = true){ return out(i?"Yes":"No"); }
int No(){ return out("No"); }
int YES(bool i = true){ return out(i?"YES":"NO"); }
int NO(){ return out("NO"); }
int Yay(bool i = true){ return out(i?"Yay!":":("); }
int possible(bool i = true){ return out(i?"possible":"impossible"); }
int Possible(bool i = true){ return out(i?"Possible":"Impossible"); }
int POSSIBLE(bool i = true){ return out(i?"POSSIBLE":"IMPOSSIBLE"); }
void Case(ll i){ printf("Case #%lld: ", i); }

struct Graph {
    struct Edge {
        int rev, from, to;
        long long cap;
        Edge(int r, int f, int t, long long c) : rev(r), from(f), to(t), cap(c) {}
    };
    vector<vector<Edge>> list;
    Graph(int N) : list(N) {}
    size_t size() {
        return list.size();
    }
    vector<Edge>& operator [] (int i) {
        return list[i];
    }
    Edge& redge(const Edge& e) {
        return list[e.to][e.rev];
    }
    void run_flow(Edge& e, long long f) {
        e.cap -= f;
        redge(e).cap += f;
    }
    void addedge(int from, int to, long long cap) {
        int fromrev = (int)list[from].size();
        int torev = (int)list[to].size();
        list[from].push_back(Edge(torev, from, to, cap));
        list[to].push_back(Edge(fromrev, to, from, 0));
    }
    void addedge2(int from, int to, long long cap) {
        int fromrev = (int)list[from].size();
        int torev = (int)list[to].size();
        list[from].push_back(Edge(torev, from, to, cap));
        list[to].push_back(Edge(fromrev, to, from, cap));
    }
};
struct Dinic {
    static const long long INF = 0x1fffffffffffffff;
    vector<int> seen, level;
    Dinic() {}
    void dibfs(Graph& G, int s) {
        level.assign((int)G.size(), -1);
        queue<int> que;
        level[s] = 0;
        que.push(s);
        while (!que.empty()) {
            int v = que.front(); que.pop();
            for (auto& e : G[v]) {
                if (e.cap > 0 && level[e.to] < 0) {
                    level[e.to] = level[v] + 1;
                    que.push(e.to);
                }
            }
        }
    }
    long long didfs(Graph& G, int v, int t, long long f) {
        if (v == t) return f;
        seen[v] = true;
        for (auto& e : G[v]) {
            if (seen[e.to]) continue;
            if (e.cap > 0 && level[v] < level[e.to]) {
            long long flow = didfs(G, e.to, t, min(f, e.cap));
                if (flow == 0) continue;
                G.run_flow(e, flow);
                return flow;
            }
        }
        return 0;
    }
    long long solve(Graph& G, int s, int t) {
        long long res = 0;
        while (true) {
            dibfs(G, s);
            if (level[t] < 0) return res;
            seen.assign((int)G.size(), false);
            int flow;
            while ((flow = didfs(G, s, t, INF)) > 0) {
                res += flow;
            }
        }
        return res;
    }
};

int main() {
    INT(N,M,d);
    vector<int> u(M), v(M), p(M), q(M), w(M);
    rep(i,M) {
        in(u[i],v[i],p[i],q[i],w[i]);
        u[i]--; v[i]--;
    }
    map<int,int> mp;
    mp[0]=0;
    rep(i,M) {
        mp[p[i]]=0;
        mp[q[i]+d]=0;
    }
    int cnt = 0;
    for(auto &p:mp) {
        p.second = cnt;
        cnt++;
    }

    rep(i,M) {
        p[i] = mp[p[i]];
        q[i] = mp[q[i]+d];
    }
    int n = mp.size();
    Graph G(n*N);
    rep(i,N) rep(j,n-1) G.addedge(i*n+j,i*n+j+1,LINF);
    rep(i,M) {
        G.addedge(u[i]*n+p[i],v[i]*n+q[i],w[i]);
    }
    out(Dinic().solve(G,0,n*N-1));
}