n,d,k = map(int,input().split())
a = list(map(int,input().split()))
c = list(map(int,input().split()))
inf = float('inf')
#i番目まででjこ採用、美しさk
dp = [[None]*(k+1) for _ in range(d+1)]
ndp = [[None]*(k+1) for _ in range(d+1)]
dp[0][0] = 0
for i in range(n):
    for j in range(d+1):
        for t in range(k+1):
            if dp[j][t] is not None and ndp[j][t] is not None:
                ndp[j][t] = max(ndp[j][t],dp[j][t])
            elif dp[j][t] is not None:
                ndp[j][t] = dp[j][t]
            if j != d:
                if dp[j][t] is not None and ndp[j+1][min(k,t+c[i])] is not None:
                    ndp[j+1][min(k,t+c[i])] = max(ndp[j+1][min(k,t+c[i])], dp[j][t] + a[i])
                elif dp[j][t] is not None:
                    ndp[j+1][min(k,t+c[i])] = dp[j][t] + a[i]
    dp = list(ndp)
    ndp = [[None]*(k+1) for _ in range(d+1)]
print(dp[-1][-1] if dp[-1][-1] is not None else "No")