N = int(input())
C = int(input())
V = int(input())
edge = [list(map(int, input().split())) for _ in range(4)]

dp = [[[float('inf')]*(C+1) for _ in range(N)] for _ in range(N+1)]
dp[0][0][C] = 0
res = float('inf')
for i in range(1,N+1):
    for j in range(V):
        s,t,y,m = edge[0][j],edge[1][j],edge[2][j],edge[3][j]
        s-=1;t-=1
        for k in range(y,C+1):
            dp[i][t][k-y] = min(dp[i][t][k-y],dp[i-1][s][k]+m)
    res = min(res,min(dp[i][N-1]))
print(-1 if res==float('inf') else res)