PAT basic 1038

#include <iostream>#include <vector>using namespace std;int main() {    int n, m, temp;    cin >> n;    vector<int> a(n), b(101);    for (int i = 0; i < n; i++) {        cin >> a[i];        b[a[i]]++;    }    cin >> m;    for (int i = 0; i < m; i++) {        cin >> temp;        if (i != 0) cout << " ";        cout << b[temp];    }    return 0;}//这才是哈希散列嘛