M = 10**6
I = lambda:map(int,raw_input().split())
i = lambda:input()
N,C,V = i(),i(),i() 
L = [[] for i in xrange(V)]
for s,t,y,m in zip(I(),I(),I(),I()):
	L[s-1].append((t-1,y,m))
dp = [[M]*(C+1) for _ in xrange(N)]
dp[0][0] = 0
for s in xrange(N-1):
	for c in xrange(C):
		if dp[s][c] == M:
			continue
		tmp = dp[s][c]
		for t,y,m in L[s]:
			if c+y > C: continue
			if tmp + m < dp[t][c+y]:
				dp[t][c+y] = tmp + m
ans = min(dp[N-1])
print - 1 if ans == M else ans