#include <bits/stdc++.h>   using namespace std;   int main() {     int n, m, k;     cin >> n >> m >> k;     std::vector<int> power(n, -1), school(n, -1), chosen(k, -1);     int ans = 0;     for (int i = 0; i < n; i++) {       cin >> power[i];     }     for (int i = 0; i < n; i++) {       cin >> school[i];     }     for (int i = 0; i < k; i++) {       cin >> chosen[i];     }     for (int i = 0; i < k; i++) {       for (int j = 0; j < n; j++) {         if (power[j] > power[chosen[i] - 1] &&             school[chosen[i] - 1] == school[j] && chosen[i] - 1 != j) {           ans++;           break;         }       }     }     cout << ans;     return 0;   }   