func_code_string: #include <bits/stdc++.h>   using namespace std;   const int INF = int(1e9);   long long n, m;   pair<long long, long long> p = make_pair(0, 0);   long long b[222222];   long long c[222222];   long long ans;   map<long long, long long> mp;   int main() {     ios_base::sync_with_stdio(false);     cin >> n;     for (int i = 1; i <= n; i++) {       int x;       cin >> x;       mp[x]++;     }     cin >> m;     for (int i = 1; i <= m; i++) cin >> b[i];     for (int i = 1; i <= m; i++) cin >> c[i];     for (int i = 1; i <= m; i++)       if (p <= make_pair(mp[b[i]], mp[c[i]]))         ans = i, p = make_pair(mp[b[i]], mp[c[i]]);     cout << ans;     return 0;   }   