题解 | #查找学生信息#

map映射查找问题

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

int main()
{
    int N;
    cin >> N;
    getchar();    //读取int类型数字后面的换行符
    unordered_map<string, string> umap;
    while (N--) { 
        string s;
        getline(cin, s);
        int pos = s.find(" ");
        string s1 = s.substr(0, pos);
        umap[s1] = s;
    }
    int M;
    cin >> M;
    while (M--) {
        string s;
        cin >> s;
        if (umap.find(s) == umap.end()) {
            cout << "No Answer!" << endl;
        }
        else {
            cout << umap[s] << endl;
        }
    }
    return 0;
}