#https://yukicoder.me/problems/no/654
import copy
class FordFulkerson:
    def __init__(self,v):
        self.v = V
        self.edges = {}
        self.used = {}
    
    def addEdge(self,fr,to,cap):
        forward = [to,cap,None]
        backward = forward[2] = [fr,0,forward]
        # self.edges.get(fr,[]).append(forward)
        # self.edges.get(to,[]).append(backward)
        if fr in self.edges:
            self.edges[fr].append(forward)
        else:
            self.edges[fr] = [forward]
            
        if to in self.edges:
            self.edges[to].append(backward)
        else:
            self.edges[to] = [backward]
            
        self.used[fr] = False
        self.used[to] = False
    
    def dfs(self,v,t,f,used):
        if v == t:
            return f
        used[v] = True
        for e in self.edges[v]:
            w,cap,rev = e
            if used[w] is False and cap:
                d = self.dfs(w,t,min(f,cap),used)
                if d:
                    e[1] -= d
                    rev[1] += d
                    return d
        return 0

    def flow(self,s,t):
        flow = 0
        f = INF = float('inf')
        v = self.v
        while f:
            used = self.used.copy() #浅いコピー
            f = self.dfs(s,t,INF,used)
            flow += f
        return flow
            
N,M,d = map(int,input().split())

V = N #頂点の数
E = M #辺の数

#(u,pi)→(v,qi)にcapacityがwiの辺を設定
#(u,pi)→(u,pi+1)には容量無限大の辺を設定(空港で待つことを意味する)

#上の方法だと間に合わないから
#辺を貼るのは街iに飛行機が到着する時刻だけでいい。
INF = float('inf')
ff = FordFulkerson(N+1)
visited = [[] for _ in range(N+1)] #各街に飛行機が到着する時間
visited[1].append(0)
visited[N].append(1e9)
#dを考慮する。Aに出発しBに到着する飛行機はAに出発し、B+dに到着するとみなすことができる。
for _ in range(M):
    u,v,p,q,w = map(int,input().split())
    #(u,p)→(v,q+d)へcapacityがwの辺
    visited[u].append(p)
    visited[v].append(q+d)
    ff.addEdge((u,p),(v,q+d),w)
# print(ff.edges)
for i in range(N+1):
    visited[i].sort()
    for j in range(len(visited[i])-1):
        ff.addEdge((i,visited[i][j]),(i,visited[i][j+1]),INF)

print(ff.flow((1,0),(N,1e9)))