题解 | #记票统计#

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

int main() {
    int n;
    cin >> n;
    string str;
    unordered_map<string, int> contribute;
    vector<string> v;
    for(int i = 0; i < n; ++i){
        cin >> str;
        contribute[str] = 0;
        v.push_back(str);
    }
    v.push_back("Invalid");
    cin >> n;
    for(int i = 0; i < n; ++i){
        cin >> str;
        if( contribute.find(str) != contribute.end() ){
            contribute[str] ++;
        }else{
            contribute["Invalid"] ++;
        }
    }
    for(auto it : v){
        cout << it << " : " << contribute[it] << endl; 
    }


}
// 64 位输出请用 printf("%lld")