N,M,K=map(int, input().split())
S=list(map(int, input().split()))
A=list(map(int, input().split()))
B=list(map(int, input().split()))
mod=998244353
dp=[[0]*(K+1) for _ in range(N+1)]
L=[-1 for _ in range(2001)]
cp=[[0]*(K+1) for _ in range(N+2)]
dp[0][0]=1;cp[0][0]=1
for i in range(N):
  a,b=A[S[i]-1],B[S[i]-1]
  for j in range(K+1):
    if j-a>=0:
      dp[i+1][j]+=cp[i][j-a]-cp[L[S[i]]][j-a]
      dp[i+1][j]%=mod
    if j-b>=0:
      dp[i+1][j]+=cp[i][j-b]-cp[L[S[i]]][j-b]
      dp[i+1][j]%=mod
    cp[i+1][j]=cp[i][j]+dp[i+1][j]
    cp[i+1][j]%=mod
  L[S[i]]=i
print(cp[-2][-1]%mod)