from heapq import heappop, heappush, heapify from bisect import bisect #from sortedcontainers import SortedList from collections import deque, defaultdict from math import floor, ceil, isqrt, comb from sys import stdin, setrecursionlimit #setrecursionlimit(10**7) intin = lambda: int(stdin.readline()) strin = lambda: stdin.readline().rstrip() listin = lambda: list(map(int, stdin.readline().split())) tuplein = lambda m: [tuple(map(lambda x: int(x) if x.isdigit() or (len(x) > 1 and x[0] == "-" and x[1:].isdigit()) else x, stdin.readline().split())) for _ in range(m)] gridin = lambda m: [list(map(int, stdin.readline().split())) for _ in range(m)] strgridin = lambda h: [stdin.readline().rstrip() for _ in range(h)] mapin = lambda: map(int, stdin.readline().split()) N, D, K = mapin() A = listin() C = listin() dp = [[[-float("inf")] * (K + 1) for _ in range(D + 1)] for _ in range(N + 1)] #dp[i][j][k] = i?????????????????????????????????k???????????????????????? dp[0][0][0] = 0 for i in range(N): for j in range(D + 1): for k in range(K + 1): dp[i+1][j][k] = max(dp[i+1][j][k], dp[i][j][k]) if j + 1 <= D: dp[i+1][j+1][min(K,k+C[i])] = max(dp[i+1][j+1][min(K,k+C[i])], dp[i][j][k] + A[i]) print(dp[N][D][K] if dp[N][D][K] != -float("inf") else "No")