#include <cstdio>
#include <iostream>
#include <string>
#include <sstream>
#include <stack>
#include <algorithm>
#include <cmath>
#include <queue>
#include <map>
#include <set>
#include <cstdlib>
#include <bitset>
#include <tuple>
#include <assert.h>
#include <deque>
#include <bitset>
#include <iomanip>
#include <limits>
#include <chrono>
#include <random>
#include <array>
#include <unordered_map>
#include <functional>
#include <complex>
#include <numeric>
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
constexpr long long MAX = 5100000;
constexpr long long INF = 1LL << 60;
constexpr int inf = 1000000007;
constexpr long long mod = 1000000007LL;
//constexpr long long mod = 998244353LL;
const long double PI = acos((long double)(-1));

using namespace std;
typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;

struct Edge {
	int to;
	int money;
	int time;
	Edge(int _to, int _money, int _time) :to(_to), money(_money), time(_time) {}
};
vector<int> v[4];
int main()
{
	/*
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	*/

	int n, c, m; scanf("%d %d %d", &n, &c, &m);
	for (int i = 0; i < 4; i++) { v[i].resize(m); for (int j = 0; j < m; j++) scanf("%d", &v[i][j]); }
	vector<vector<Edge>> g(n);
	for (int i = 0; i < m; i++) {
		int s = v[0][i] - 1;
		int t = v[1][i] - 1;
		g[s].emplace_back(t, v[2][i], v[3][i]);
	}
	vector<vector<int>> dp(c + 1, vector<int>(n, inf));
	dp[0][0] = 0;
	for (int cur = 0; cur <= c; cur++) {
		for (int i = 0; i < n; i++) {
			if (dp[cur][i] == inf) continue;
			for (auto nxt : g[i]) {
				if (cur + nxt.money <= c) {
					chmin(dp[cur + nxt.money][nxt.to], dp[cur][i] + nxt.time);
				}
			}
		}
	}
	int res = inf; for (int i = 0; i <= c; i++) chmin(res, dp[i][n - 1]);
	if (res == inf) res = -1;
	cout << res << endl;
	return 0;
}