pat 乙级 1100 校庆

重点在于用map将id和是否是校友一一对应。

 1 #include <iostream>
 2 #include <map>
 3 using namespace std;
 4 
 5 int main(){
 6     int N, num = 0;
 7     string str, old, olb;
 8     bool flag = false;
 9     cin >> N;
10     map<string,int> isxy;
11     for(int i = 0; i < N; i++){
12         cin >> str;
13         isxy[str] = 1;
14         if(old.empty() || old.substr(6, 8) > str.substr(6, 8)) old = str;
15     }
16     cin >> N;
17     for(int i = 0; i < N; i++){
18         cin >> str;
19         if(isxy[str] == 1) num++;
20         if(str == old) flag = true;
21         if(!flag && (olb.empty() || olb.substr(6, 8) > str.substr(6, 8))) olb = str;
22     }
23     if(flag) cout << num << endl << old;
24     else cout << num << endl << olb;
25     return 0;
26 }

posted on 2022-01-17 11:53 千咲阅读(69) 评论(0) 收藏举报