n = int(input())
c = int(input())
v = int(input())
*s, = map(int,input().split())
*t, = map(int,input().split())
*y, = map(int,input().split())
*m, = map(int,input().split())

g = [[] for _ in range(n)]
for ss,tt,yy,mm in zip(s,t,y,m):
    g[ss-1].append((tt-1,yy,mm))

INF = 10**9
res = [[INF]*(c+1) for _ in range(n)]
res[0][0] = 0
for i in range(n):
    for j in range(c+1):
        if res[i][j] == INF: continue
        for tt,yy,mm in g[i]:
            if j+yy <= c:
                res[tt][j+yy] = min(res[tt][j+yy], res[i][j]+mm)

ans = min(res[-1])
print(ans if ans!=INF else -1)