from collections import defaultdict, deque, Counter
# from functools import cache
# import copy
from itertools import combinations, permutations, product, accumulate, groupby, chain
# from more_itertools import distinct_permutations
from heapq import heapify, heappop, heappush, heappushpop
import math
import bisect
# from pprint import pprint
from random import randint, shuffle, randrange
# from sortedcontainers import SortedSet, SortedList, SortedDict
import sys
# sys.setrecursionlimit(2000000)
input = lambda: sys.stdin.readline().rstrip('\n')
inf = float('inf')
mod1 = 10**9+7
mod2 = 998244353
def ceil_div(x, y): return -(-x//y)

#################################################   

import gc

N, D, K = map(int, input().split())
A = list(map(int, input().split()))
C = list(map(int, input().split()))
dp = [[-inf]*(K+1) for _ in range(D+1)]
dp[0][0] = 0
cnt = 0
for a, c in zip(A, C):
    ndp = [x[:] for x in dp]
    for i in range(D):
        for j in range(K+1):
            ndp[i+1][min(j+c, K)] = max(ndp[i+1][min(j+c, K)], dp[i][j]+a)
    dp = ndp
    cnt = (cnt+1)%100
    if cnt == 0:
        gc.collect()
print(dp[D][K] if dp[D][K] != -inf else "No")