#include using namespace std; using ll = long long; using ld = long double; using ull = unsigned long long; using uint = unsigned int; using pii = pair; using pll = pair; using pdd = pair; using tuplis = array; template using pq = priority_queue, greater>; const int INF = 0x3fffffff; const ll MINF = 0x7fffffffffff; const ll LINF = 0x1fffffffffffffff; const ld DINF = numeric_limits::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 name(__VA_ARGS__) #define vv(type,name,h,...) vector>name(h,vector(__VA_ARGS__)) #define vvv(type,name,h,w,...) vector>>name(h,vector>(w,vector(__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 name(size); in(name) #define VV(type, name, h, w) vector> name(h, vector(w)); in(name) template bool chmin(T &a, const T &b){ if(a > b){ a = b; return 1; } else return 0; } template bool chmax(T &a, const T &b){ if(a < b){ a = b; return 1; } else return 0; } template ll sum(const T& a){ return accumulate(all(a), 0LL); } template ld dsum(const T& a){ return accumulate(all(a), 0.0L); } template auto min(const T& a){ return *min_element(all(a)); } template 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 factor(ll x){ vector 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 divisor(ll x){ vector 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& 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 void scan(vector&); template void scan(deque&); template void scan(array&); template void scan(pair&); template void scan(T(&)[size]); template void scan(vector& a){ for(auto& i : a) scan(i); } template void scan(deque& a){ for(auto& i : a) scan(i); } template void scan(array& a){ for(auto& i : a) scan(i); } template void scan(pair& p){ scan(p.first); scan(p.second); } template void scan(T (&a)[size]){ for(auto& i : a) scan(i); } template void scan(T& a){ cin >> a; } void in(){} template 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 void print(const vector&); template void print(const array&); template void print(const pair& p); template void print(const T (&)[size]); template void print(const vector& a){ if(a.empty()) return; print(a[0]); for(auto i = a.begin(); ++i != a.end(); ){ putchar(' '); print(*i); } } template void print(const deque& a){ if(a.empty()) return; print(a[0]); for(auto i = a.begin(); ++i != a.end(); ){ putchar(' '); print(*i); } } template void print(const array& a){ print(a[0]); for(auto i = a.begin(); ++i != a.end(); ){ putchar(' '); print(*i); } } template void print(const pair& p){ print(p.first); putchar(' '); print(p.second); } template void print(const char (&a)[size]){ for(auto&& i : a) if(i!=EOF)print(i); } // template void print(const T (&a)[size]){ print(a[0]); for(auto i = a; ++i != end(a); ){ putchar(' '); print(*i); } } template void print(const T& a){ cout << a; } int out(){ putchar('\n'); return 0; } template int out(const T& t){ print(t); putchar('\n'); return 0; } template 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, cap; Edge(int r, int f, int t, int c) : rev(r), from(f), to(t), cap(c) {} }; vector> list; Graph(int N) : list(N) {} size_t size() { return list.size(); } vector& operator [] (int i) { return list[i]; } Edge& redge(const Edge& e) { return list[e.to][e.rev]; } void run_flow(Edge& e, int f) { e.cap -= f; redge(e).cap += f; } void addedge(int from, int to, int 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, int 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 int INF = 1 << 30; vector seen, level; Dinic() {} void dibfs(Graph& G, int s) { level.assign((int)G.size(), -1); queue 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); } } } } int didfs(Graph& G, int v, int t, int 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]) { int flow = didfs(G, e.to, t, min(f, e.cap)); if (flow == 0) continue; G.run_flow(e, flow); return flow; } } return 0; } int solve(Graph& G, int s, int t) { int 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 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 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,INF); 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)); }