#!/usr/bin/env python3
import functools
import itertools
import operator


def memoize(fn):
    table = {}

    def func(*args):
        if args not in table:
            table[args] = fn(*args)
        return table[args]
    return func

N = int(input())
C = int(input())
V = int(input())
S = [int(s) for s in input().split()]
T = [int(t) for t in input().split()]
Y = [int(y) for y in input().split()]
M = [int(m) for m in input().split()]

RODE = list(zip(S, T, Y, M))


@memoize
def path(town, yen):
    if town == 1:
        return [[1]]
    road = [path(s, yen - y)
            for s, t, y, m in RODE if t == town and yen >= y]
    if len(road) < 1:
        return [[-1]]
    return [p + [town] for p in functools.reduce(operator.add, road)]


@memoize
def roads(fr, to):
    return [(y, m) for s, t, y, m in RODE if s == fr and t == to]


def cost_and_meter(roads):
    cost = 0
    meter = 0
    for road in roads:
        cost += road[0]
        meter += road[1]
    return (cost, meter)


def min_cost_and_meter(path):
    road = []
    for i in range(1, len(path)):
        road.append(roads(path[i - 1], path[i]))
    ways = itertools.product(*road)
    c_m = [cost_and_meter(way) for way in ways]
    path = [m for y, m in c_m if y <= C]
    if len(path) == 0:
        return -1
    return min(path)

meters = [m for m in [min_cost_and_meter(p) for p in path(N, C)] if m > 0]
if len(meters) == 0:
    print(-1)
else:
    print(min(meters))