python/TangDou/LuoGuBook/P1918_Map.cpp

#include <bits/stdc++.h>

using namespace std;
int n, q;
unordered_map<int, int> _map;

int main() {
    cin >> n;
    for (int i = 1; i <= n; i++) {
        int cnt;
        cin >> cnt;
        _map[cnt] = i;
    }
    cin >> q;
    while (q--) {
        int m;
        cin >> m;
        cout << _map[m] << endl;
    }
    return 0;
}