题解 | #记票统计#

#include <iostream>
#include <vector>
#include <unordered_map>
using namespace std;

int main() {
    int n;
    cin >> n;
    vector<string> houxuanren;
    for (int i = 0;i < n;i++)
    {
        string a;
        cin >> a;
        houxuanren.push_back(a);
    }

    int m;
    cin >> m;
    vector<string> xuanpiao;
    for (int i = 0;i < m;i++)
    {
        string a;
        cin >> a;
        xuanpiao.push_back(a);
    }

    //unordered_map<string ,int> tongji;

    // for (auto it : houxuanren)
    // {
    //     tongji[it] = 0;         //初始化map，一个候选人对应一个选票
    // }

    vector<pair<string, int>> tongji(houxuanren.size());

    for (int i = 0; i < houxuanren.size(); ++i) 
    {
        tongji[i] = make_pair(houxuanren[i], 0);
    }


    for (int i = 0;i < xuanpiao.size();i++)
    {
        for (int j = 0;j < houxuanren.size();j++)
        {
            if (xuanpiao[i] == houxuanren[j])
            {
                tongji[j].second += 1;
            }
        }
    }
    for (auto it : tongji)
    {
        cout << it.first << " : " << it.second << endl;
    }

    int wuxiao = 0;
    for (auto it : tongji)
    {
        wuxiao += it.second;
    }
    cout << "Invalid : " << (m - wuxiao) ;
}
// 64 位输出请用 printf("%lld")