N,D,K = list(map(int,input().split()))
A = list(map(int,input().split()))
C = list(map(int,input().split()))

now = [[float("-inf") for _ in range(K+1)] for _ in range(D+1)]
now[0][0] = 0

for i in range(N):
    next = [[float("-inf") for _ in range(K+1)] for _ in range(D+1)]
    for j in range(D+1):
        for k in range(K+1):
            # 選ばない
            next[j][k] = max(next[j][k],now[j][k])

            # 選ぶ
            if(j+1 > D):continue
            next[j+1][min(k+C[i],K)] = max(next[j+1][min(k+C[i],K)],now[j][k] + A[i])
    now,next = next,[]

print(now[-1][-1] if now[-1][-1] != float("-inf") else "No")